[mdr-users] java.lang.ClassCastException in example using MDR

Hi!

I'm trying to execute the Example using MDR but I cannot solve my problem: when I compile it's fine but when I execute, I've got the following:

java.lang.ClassCastException
        at org.netbeans.mdrdemo.ProjectCreationDemo.main(ProjectCreationDemo.java:20)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.openide.execution.ThreadExecutor.executeClass(ThreadExecutor.java:116)
        at org.openide.execution.ThreadExecutor$TERunnable.run(ThreadExecutor.java:183)
        at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:118)


I did everything as showed in the example and try to fix the problem with the older reported bug answers but it's still bugging;

I've printed that too:
System.out.println("cast type "+repository.getExtent("Projects metadata").getClass().getName());
which display :
cast type org.netbeans.jmi.projects.ProjectsPackage$Impl

what is $Impl  ?
 

If anybody can help me...
Thanks by advance

C.


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