java.lang.Error: org.openide.loaders.DataObjectNotFoundException: MasterFileObject@53d29b[file:/home/jp159440/JavaApplication10/src/pack/AbstractJ2eeFile.java]
	at org.netbeans.spi.project.support.ant.GlobFileBuiltQuery$StatusImpl.<init>(GlobFileBuiltQuery.java:201)
	at org.netbeans.spi.project.support.ant.GlobFileBuiltQuery.createStatus(GlobFileBuiltQuery.java:184)
	at org.netbeans.spi.project.support.ant.GlobFileBuiltQuery.getStatus(GlobFileBuiltQuery.java:108)
	at org.netbeans.modules.java.j2seproject.J2SEFileBuiltQuery.getStatus(J2SEFileBuiltQuery.java:48)
	at org.netbeans.modules.projectapi.ProjectFileBuiltQuery.getStatus(ProjectFileBuiltQuery.java:37)
	at org.netbeans.api.queries.FileBuiltQuery.getStatus(FileBuiltQuery.java:70)
	at org.netbeans.modules.java.JavaNode$StatePropagator.registerBuildStatusListener(JavaNode.java:848)
	at org.netbeans.modules.java.JavaNode$StatePropagator.<init>(JavaNode.java:777)
	at org.netbeans.modules.java.JavaNode$StatePropagator.getDefault(JavaNode.java:787)
	at org.netbeans.modules.java.JavaNode.resolveIcons(JavaNode.java:554)
	at org.netbeans.modules.java.JavaNode$StateUpdater.updateNodes(JavaNode.java:752)
	at org.netbeans.modules.java.JavaNode$StateUpdater.run(JavaNode.java:745)
	at org.openide.util.Task.run(Task.java:207)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:469)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:870)
Caused by: org.openide.loaders.DataObjectNotFoundException: MasterFileObject@53d29b[file:/home/jp159440/JavaApplication10/src/pack/AbstractJ2eeFile.java]
	at org.openide.loaders.DataObject.find(DataObject.java:468)
	at org.netbeans.spi.project.support.ant.GlobFileBuiltQuery$StatusImpl.<init>(GlobFileBuiltQuery.java:199)
	... 14 more
Caused by: org.openide.filesystems.FileStateInvalidException: MasterFileObject@53d29b[file:/home/jp159440/JavaApplication10/src/pack/AbstractJ2eeFile.java]
	at org.openide.loaders.DataObject.find(DataObject.java:448)
	... 15 more