java.lang.AssertionError
   at org.netbeans.modules.mobility.project.J2MEProjectOperations.notifyDeleting(J2MEProjectOperations.java:110)
   at org.netbeans.spi.project.support.ProjectOperations.notifyDeleting(ProjectOperations.java:129)
   at org.netbeans.modules.project.uiapi.DefaultProjectOperationsImplementation.performDelete(DefaultProjectOperationsImplementation.java:130)
   at org.netbeans.modules.project.uiapi.DefaultProjectOperationsImplementation.access$200(DefaultProjectOperationsImplementation.java:101)
   at org.netbeans.modules.project.uiapi.DefaultProjectOperationsImplementation$1.execute(DefaultProjectOperationsImplementation.java:205)
   at org.netbeans.modules.project.uiapi.DefaultProjectOperationsImplementation$6$1.run(DefaultProjectOperationsImplementation.java:649)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2036)