java.lang.AssertionError
   at org.netbeans.modules.cnd.modelimpl.repository.PersistentUtils.writeUTF(PersistentUtils.java:337)
   at org.netbeans.modules.cnd.modelimpl.csm.ClassEnumBase.write(ClassEnumBase.java:360)
   at org.netbeans.modules.cnd.modelimpl.csm.ClassImpl.write(ClassImpl.java:609)
   at org.netbeans.modules.cnd.repository.support.AbstractObjectFactory.writeSelfPersistent(AbstractObjectFactory.java:69)
   at org.netbeans.modules.cnd.modelimpl.csm.core.CsmObjectFactory.write(CsmObjectFactory.java:608)
   at org.netbeans.modules.cnd.repository.AsyncRepositoryWriterImpl$Worker.doWrite(AsyncRepositoryWriterImpl.java:323)
   at org.netbeans.modules.cnd.repository.AsyncRepositoryWriterImpl$Worker.run(AsyncRepositoryWriterImpl.java:295)
   at org.openide.util.RequestProcessor$FixedRateTask.run(RequestProcessor.java:1187)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)