Problem updating 8.1.0 to 8.1.1

I keep getting an error.

'Updating Software' has encountered a problem.
An error occured while collecting items to be installed.

An error occurred while collecting items to be installed
session context was:(profile=Servoy, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
No repository found containing: osgi.bundle,com.servoy.eclipse.core,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.debug,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.designer,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.designer.rfb,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.designer.rib,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.designer.wpm,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.exporter.mobile,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.exporter.solution,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.exporter.war,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.extension.compatibility,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.jsunit,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.model,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.model.exporter.mobile,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.profiler,8.1.1.3029
No repository found containing: osgi.bundle,com.servoy.eclipse.ui,8.1.1.3029
No repository found containing: osgi.bundle,j2db_documentation,8.1.1.3029
No repository found containing: osgi.bundle,j2db_runtime,8.1.1.3029
No repository found containing: osgi.bundle,j2db_server,8.1.1.3029
No repository found containing: osgi.bundle,j2db_tunnel,8.1.1.3029
No repository found containing: osgi.bundle,javaewah,1.1.6.v20160919-1400
No repository found containing: osgi.bundle,org.eclipse.dltk.javascript.rhino,8.1.1.3029
No repository found containing: osgi.bundle,org.eclipse.egit,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.core,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.core.source,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.doc,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.gitflow,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.gitflow.source,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.gitflow.ui,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.gitflow.ui.source,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.mylyn.ui,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.mylyn.ui.source,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.ui,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.egit.ui.source,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit.archive,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit.http.apache,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit.lfs,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit.lfs.server,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit.pgm,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit.pgm.source,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit.source,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.eclipse.jgit.ui,4.6.0.201612231935-r
No repository found containing: osgi.bundle,org.jsoup,1.9.2
No repository found containing: osgi.bundle,sablo,8.1.1.3029
No repository found containing: osgi.bundle,servoy_base,8.1.1.3029
No repository found containing: osgi.bundle,servoy_debug,8.1.1.3029
No repository found containing: osgi.bundle,servoy_headless_client,8.1.1.3029
No repository found containing: osgi.bundle,servoy_ngclient,8.1.1.3029
No repository found containing: osgi.bundle,servoy_shared,8.1.1.3029
No repository found containing: osgi.bundle,servoy_smart_client,8.1.1.3029
No repository found containing: org.eclipse.update.feature,com.servoy.eclipse.feature,8.1.1.3029
No repository found containing: org.eclipse.update.feature,org.eclipse.egit,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.egit.gitflow.feature,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.egit.mylyn,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.egit.source,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.jgit,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.jgit.http.apache,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.jgit.lfs,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.jgit.pgm,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.jgit.pgm.source,4.6.0.201612231935-r
No repository found containing: org.eclipse.update.feature,org.eclipse.jgit.source,4.6.0.201612231935-r
No repository found containing: binary,servoy.product.root.feature_root,8.1.1.3029
No repository found containing: binary,servoy.product_root.win32.win32.x86,8.1.1.3029

I checked my software sites with the installation of my colleague but we see no differences… Any idea how I can solve this?

this is mostly some caching issue, because the files are really there in the update site

What you can try to do is through the preferences, delete the servoy update site url (that is: http://download.servoy.com/developer/8xx_updates/)

thne restart the developer and then add back in that url

yes, that seems to have solved the problem. :)
Many thanks