Please help for obfuscate4e(proguard) in my eclipse rcp project?

[David Song]

Hi all,
I use obfuscate4e 0.7.1 (proguard) to obfuscate my eclipse rcp project. In the project hibernate is used to handle the database. but after I obfuscate it, error occores and exception code just as below:

  
java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType
	at com.micromms.b.a.l.<init>(Unknown Source)
	at com.micromms.b.a.n.<init>(Unknown Source)
	at com.micromms.fms.session.b.<init>(Unknown Source)
	at com.micromms.fms.session.b.a(Unknown Source)
	at com.micromms.fms.Application.start(Unknown Source)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1311)

Thanks for any help

David