Upgrade 6.0.x fails

I Originally was able to upgrade Servoy 6.0.3 → 6.0.4 inline but subsequent attempts have failed. To get 6.0,5 I reinstalled, thinking this would resolve the problem. Now an attempt to update to 6.0.6 is failing again with similar reasons as before:

!SUBENTRY 1 org.eclipse.ui.workbench 2 0 2012-04-23 00:34:59.992
!MESSAGE Conflict for 'AUTOGEN:::org.eclipse.ui.cheatsheets.actionSet/org.eclipse.ui.cheatsheets.actions.CheatSheetHelpMenuAction':
HandlerActivation(commandId=AUTOGEN:::org.eclipse.ui.cheatsheets.actionSet/org.eclipse.ui.cheatsheets.actions.CheatSheetHelpMenuAction,
	handler=ActionDelegateHandlerProxy(null,org.eclipse.ui.cheatsheets.CheatSheetExtensionFactory:helpMenuAction),
	expression=AndExpression(ActionSetExpression(org.eclipse.ui.cheatsheets.actionSet,org.eclipse.ui.internal.WorkbenchWindow@497b1c02),WorkbenchWindowExpression(org.eclipse.ui.internal.WorkbenchWindow@497b1c02)),sourcePriority=16640)
HandlerActivation(commandId=AUTOGEN:::org.eclipse.ui.cheatsheets.actionSet/org.eclipse.ui.cheatsheets.actions.CheatSheetHelpMenuAction,
	handler=ActionDelegateHandlerProxy(null,org.eclipse.ui.cheatsheets.CheatSheetExtensionFactory:helpMenuAction),
	expression=AndExpression(ActionSetExpression(org.eclipse.ui.cheatsheets.actionSet,org.eclipse.ui.internal.WorkbenchWindow@497b1c02),WorkbenchWindowExpression(org.eclipse.ui.internal.WorkbenchWindow@497b1c02)),sourcePriority=16640)

!ENTRY org.eclipse.core.net 1 0 2012-04-23 00:35:01.379
!MESSAGE System property http.nonProxyHosts has been set to local|*.local|private|*.private by an external source. This value will be overwritten using the values from the preferences

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:03.318
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.simpleRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.getLocalFile(SimpleMetadataRepositoryFactory.java:66)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.load(SimpleMetadataRepositoryFactory.java:88)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.internal.p2.updatechecker.UpdateChecker.getAvailableRepositories(UpdateChecker.java:150)
	at org.eclipse.equinox.internal.p2.updatechecker.UpdateChecker.checkForUpdates(UpdateChecker.java:128)
	at org.eclipse.equinox.internal.p2.updatechecker.UpdateChecker$UpdateCheckThread.run(UpdateChecker.java:72)

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:03.331
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.compositeRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.getLocalFile(CompositeMetadataRepositoryFactory.java:74)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.load(CompositeMetadataRepositoryFactory.java:99)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.internal.p2.updatechecker.UpdateChecker.getAvailableRepositories(UpdateChecker.java:150)
	at org.eclipse.equinox.internal.p2.updatechecker.UpdateChecker.checkForUpdates(UpdateChecker.java:128)
	at org.eclipse.equinox.internal.p2.updatechecker.UpdateChecker$UpdateCheckThread.run(UpdateChecker.java:72)

!ENTRY org.eclipse.equinox.p2.repository 4 1002 2012-04-23 00:35:03.367
!MESSAGE Error while reading from repository: http://www.servoy.com/developer/6xx_updates/site.xml.

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:13.496
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.simpleRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.getLocalFile(SimpleMetadataRepositoryFactory.java:66)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.load(SimpleMetadataRepositoryFactory.java:88)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.doLoad(LoadMetadataRepositoryJob.java:115)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.runModal(LoadMetadataRepositoryJob.java:100)
	at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:82)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:13.497
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.compositeRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.getLocalFile(CompositeMetadataRepositoryFactory.java:74)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.load(CompositeMetadataRepositoryFactory.java:99)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.doLoad(LoadMetadataRepositoryJob.java:115)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.runModal(LoadMetadataRepositoryJob.java:100)
	at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:82)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.equinox.p2.core 4 0 2012-04-23 00:35:13.505
!MESSAGE Provisioning exception
!STACK 1
org.eclipse.equinox.p2.core.ProvisionException: Error while reading from repository: http://www.servoy.com/developer/6xx_updates/site.xml.
	at org.eclipse.equinox.internal.p2.updatesite.UpdateSite.loadActualSiteFile(UpdateSite.java:235)
	at org.eclipse.equinox.internal.p2.updatesite.UpdateSite.loadSiteFile(UpdateSite.java:172)
	at org.eclipse.equinox.internal.p2.updatesite.UpdateSite.load(UpdateSite.java:142)
	at org.eclipse.equinox.internal.p2.updatesite.metadata.UpdateSiteMetadataRepositoryFactory.initializeRepository(UpdateSiteMetadataRepositoryFactory.java:85)
	at org.eclipse.equinox.internal.p2.updatesite.metadata.UpdateSiteMetadataRepositoryFactory.load(UpdateSiteMetadataRepositoryFactory.java:54)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.doLoad(LoadMetadataRepositoryJob.java:115)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.runModal(LoadMetadataRepositoryJob.java:100)
	at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:82)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
!SUBENTRY 1 org.eclipse.equinox.p2.repository 4 1002 2012-04-23 00:35:13.506
!MESSAGE Error while reading from repository: http://www.servoy.com/developer/6xx_updates/site.xml.

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:13.514
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.simpleRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.getLocalFile(SimpleMetadataRepositoryFactory.java:66)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.load(SimpleMetadataRepositoryFactory.java:88)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.loadMetadataRepository(ProvisioningContext.java:211)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.getLoadedMetadataRepositories(ProvisioningContext.java:194)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.getMetadata(ProvisioningContext.java:275)
	at org.eclipse.equinox.internal.p2.director.SimplePlanner.updatesFor(SimplePlanner.java:835)
	at org.eclipse.equinox.p2.operations.UpdateOperation.updatesFor(UpdateOperation.java:144)
	at org.eclipse.equinox.p2.operations.UpdateOperation.computeProfileChangeRequest(UpdateOperation.java:181)
	at org.eclipse.equinox.p2.operations.UpdateOperation$1.run(UpdateOperation.java:325)
	at org.eclipse.equinox.internal.p2.operations.SearchForUpdatesResolutionJob.runModal(SearchForUpdatesResolutionJob.java:37)
	at org.eclipse.equinox.p2.operations.ProfileChangeOperation.resolveModal(ProfileChangeOperation.java:115)
	at org.eclipse.equinox.internal.p2.ui.sdk.UpdateHandler.doPostLoadBackgroundWork(UpdateHandler.java:49)
	at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:86)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:13.515
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.compositeRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.getLocalFile(CompositeMetadataRepositoryFactory.java:74)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.load(CompositeMetadataRepositoryFactory.java:99)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.loadMetadataRepository(ProvisioningContext.java:211)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.getLoadedMetadataRepositories(ProvisioningContext.java:194)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.getMetadata(ProvisioningContext.java:275)
	at org.eclipse.equinox.internal.p2.director.SimplePlanner.updatesFor(SimplePlanner.java:835)
	at org.eclipse.equinox.p2.operations.UpdateOperation.updatesFor(UpdateOperation.java:144)
	at org.eclipse.equinox.p2.operations.UpdateOperation.computeProfileChangeRequest(UpdateOperation.java:181)
	at org.eclipse.equinox.p2.operations.UpdateOperation$1.run(UpdateOperation.java:325)
	at org.eclipse.equinox.internal.p2.operations.SearchForUpdatesResolutionJob.runModal(SearchForUpdatesResolutionJob.java:37)
	at org.eclipse.equinox.p2.operations.ProfileChangeOperation.resolveModal(ProfileChangeOperation.java:115)
	at org.eclipse.equinox.internal.p2.ui.sdk.UpdateHandler.doPostLoadBackgroundWork(UpdateHandler.java:49)
	at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:86)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:33.534
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.simpleRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.getLocalFile(SimpleMetadataRepositoryFactory.java:66)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.load(SimpleMetadataRepositoryFactory.java:88)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.doLoad(LoadMetadataRepositoryJob.java:115)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.runModal(LoadMetadataRepositoryJob.java:100)
	at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:82)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:33.548
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.compositeRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.getLocalFile(CompositeMetadataRepositoryFactory.java:74)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.load(CompositeMetadataRepositoryFactory.java:99)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.doLoad(LoadMetadataRepositoryJob.java:115)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.runModal(LoadMetadataRepositoryJob.java:100)
	at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:82)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.equinox.p2.core 4 0 2012-04-23 00:35:33.553
!MESSAGE Provisioning exception
!STACK 1
org.eclipse.equinox.p2.core.ProvisionException: Error while reading from repository: http://www.servoy.com/developer/6xx_updates/site.xml.
	at org.eclipse.equinox.internal.p2.updatesite.UpdateSite.loadActualSiteFile(UpdateSite.java:235)
	at org.eclipse.equinox.internal.p2.updatesite.UpdateSite.loadSiteFile(UpdateSite.java:172)
	at org.eclipse.equinox.internal.p2.updatesite.UpdateSite.load(UpdateSite.java:142)
	at org.eclipse.equinox.internal.p2.updatesite.metadata.UpdateSiteMetadataRepositoryFactory.initializeRepository(UpdateSiteMetadataRepositoryFactory.java:85)
	at org.eclipse.equinox.internal.p2.updatesite.metadata.UpdateSiteMetadataRepositoryFactory.load(UpdateSiteMetadataRepositoryFactory.java:54)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.doLoad(LoadMetadataRepositoryJob.java:115)
	at org.eclipse.equinox.p2.ui.LoadMetadataRepositoryJob.runModal(LoadMetadataRepositoryJob.java:100)
	at org.eclipse.equinox.internal.p2.ui.sdk.PreloadingRepositoryHandler$2.runModal(PreloadingRepositoryHandler.java:82)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
!SUBENTRY 1 org.eclipse.equinox.p2.repository 4 1002 2012-04-23 00:35:33.554
!MESSAGE Error while reading from repository: http://www.servoy.com/developer/6xx_updates/site.xml.

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:52.122
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.simpleRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.getLocalFile(SimpleMetadataRepositoryFactory.java:66)
	at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRepositoryFactory.load(SimpleMetadataRepositoryFactory.java:88)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.loadMetadataRepository(ProvisioningContext.java:211)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.getLoadedMetadataRepositories(ProvisioningContext.java:194)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.getMetadata(ProvisioningContext.java:275)
	at org.eclipse.equinox.internal.p2.director.SimplePlanner.updatesFor(SimplePlanner.java:835)
	at org.eclipse.equinox.p2.operations.UpdateOperation.updatesFor(UpdateOperation.java:144)
	at org.eclipse.equinox.p2.operations.UpdateOperation.computeProfileChangeRequest(UpdateOperation.java:181)
	at org.eclipse.equinox.p2.operations.UpdateOperation$1.run(UpdateOperation.java:325)
	at org.eclipse.equinox.internal.p2.operations.SearchForUpdatesResolutionJob.runModal(SearchForUpdatesResolutionJob.java:37)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.equinox.p2.metadata.repository 4 0 2012-04-23 00:35:52.123
!MESSAGE Unexpected error loading extension: org.eclipse.equinox.p2.metadata.repository.compositeRepository
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.httpclient.HttpClient
	at org.eclipse.ecf.provider.filetransfer.httpclient.HttpClientBrowseFileTransferFactory$1.sendBrowseRequest(HttpClientBrowseFileTransferFactory.java:53)
	at org.eclipse.ecf.provider.filetransfer.browse.MultiProtocolFileSystemBrowserAdapter.sendBrowseRequest(MultiProtocolFileSystemBrowserAdapter.java:95)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.sendBrowseRequest(FileInfoReader.java:181)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFiles(FileInfoReader.java:107)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getRemoteFile(FileInfoReader.java:123)
	at org.eclipse.equinox.internal.p2.repository.FileInfoReader.getLastModified(FileInfoReader.java:128)
	at org.eclipse.equinox.internal.p2.repository.RepositoryTransport.getLastModified(RepositoryTransport.java:224)
	at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(CacheManager.java:132)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.getLocalFile(CompositeMetadataRepositoryFactory.java:74)
	at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.load(CompositeMetadataRepositoryFactory.java:99)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:746)
	at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:651)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
	at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:92)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.loadMetadataRepository(ProvisioningContext.java:211)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.getLoadedMetadataRepositories(ProvisioningContext.java:194)
	at org.eclipse.equinox.p2.engine.ProvisioningContext.getMetadata(ProvisioningContext.java:275)
	at org.eclipse.equinox.internal.p2.director.SimplePlanner.updatesFor(SimplePlanner.java:835)
	at org.eclipse.equinox.p2.operations.UpdateOperation.updatesFor(UpdateOperation.java:144)
	at org.eclipse.equinox.p2.operations.UpdateOperation.computeProfileChangeRequest(UpdateOperation.java:181)
	at org.eclipse.equinox.p2.operations.UpdateOperation$1.run(UpdateOperation.java:325)
	at org.eclipse.equinox.internal.p2.operations.SearchForUpdatesResolutionJob.runModal(SearchForUpdatesResolutionJob.java:37)
	at org.eclipse.equinox.p2.operations.ProvisioningJob.run(ProvisioningJob.java:177)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

!ENTRY org.eclipse.ui 4 4 2012-04-23 00:36:02.259
!MESSAGE Invalid preference page path: HTML Syntax

I’ve already tried unchecking all Update items except Servoy, have also removed the Servoy update URL, quit added it back again, quit then restarted and attempted an Update, without success.
I do have an installation of 5.xx which updates quite happily, so am guessing that the 6.xx install is dodgy somehow. Any suggestions on the best way to deal with this?

Lee
MacOSX 10.7.3
Servoy Developer 6.0.5

Am I alone with this problem?

don’t disable all other update sites… do enable the 2 of eclipse itself

But it seems that somehow the install is corrupt, maybe you should just try to do a full clean install once.