servoy_jasper plugin -> Problems with MAC and Windows 7

Classic Servoy
1

Hi, me again ;)
I have some troubles getting my reports called from a MacOs and as well as from a Win7 machine.
Either MAC OS X Leopard nor Win7 will run the reports.
BUT on my Win XP machine everything works fine.
In tha Java Console i get the following errors:

07.01.2010 15:09:29 com.servoy.j2db.util.Debug error
SCHWERWIEGEND: Error ocured initializing plugin: jasperPluginRMI , error: net/sf/jasperreports/engine/JRException
07.01.2010 15:09:29 com.servoy.j2db.util.Debug error
SCHWERWIEGEND: Throwable
java.lang.NoClassDefFoundError: net/sf/jasperreports/engine/JRException
    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Class.java:2259)
    at java.lang.Class.getDeclaredField(Class.java:1852)
    at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1582)
    at java.io.ObjectStreamClass.access$700(ObjectStreamClass.java:52)
    at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:408)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:400)
    at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:297)
    at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:531)
    at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1552)
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
    at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
    at java.rmi.Naming.lookup(Naming.java:84)
    at com.servoy.j2db.J2DBClient.getServerService(J2DBClient.java:962)
    at com.servoy.j2db.plugins.ClientPluginAccessProvider.getServerService(ClientPluginAccessProvider.java:97)
    at com.servoy.plugins.jasperreports.JasperReportsPlugin.initialize(JasperReportsPlugin.java:67)
    at com.servoy.j2db.plugins.PluginManager.initClientPluginsEx(PluginManager.java:133)
    at com.servoy.j2db.plugins.PluginManager.initClientPlugins(PluginManager.java:216)
    at com.servoy.j2db.Zvc.run(Zvc.java:4)
    at com.servoy.j2db.util.TaskExecuter.run(TaskExecuter.java:6)
    at java.lang.Thread.run(Thread.java:613)

The strange thing is, these errors appear before the solution is ready loaded. I get these errors on startup.
But on the same Server, with a Win XP machine it works fine.
No errors.
Anybody an Idea?
Ah.
The Server is a Servoy 4.1.5 distribution.
I am using Servoy_Jasper_plugin v. 2.1.5

regards

GevatterJan

2

Figured it out. I have removed the plugins folder, extractet the plugin folder from a different server with the same plugins, and now everything works.

Regards

Jan