java.lang.NullPointerException
	at org.netbeans.modules.masterfs.filebasedfs.naming.NameRef.getIndex(NameRef.java:64)
	at org.netbeans.modules.masterfs.filebasedfs.naming.NamingFactory.cleanQueue(NamingFactory.java:313)
	at org.netbeans.modules.masterfs.filebasedfs.naming.NamingFactory.registerInstanceOfFileNaming(NamingFactory.java:179)
	at org.netbeans.modules.masterfs.filebasedfs.naming.NamingFactory.fromFile(NamingFactory.java:91)
	at org.netbeans.modules.masterfs.filebasedfs.children.ChildrenSupport.rescanChildren(ChildrenSupport.java:223)
	at org.netbeans.modules.masterfs.filebasedfs.children.ChildrenSupport.getChildren(ChildrenSupport.java:89)
	at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj$FolderChildrenCache.getChildren(FolderObj.java:606)
	at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.getChildren(FolderObj.java:136)
	at org.netbeans.api.java.source.gen.GeneratorTest.deepCopy(GeneratorTest.java:88)
	at org.netbeans.api.java.source.gen.GeneratorTest.deepCopy(GeneratorTest.java:92)
	at org.netbeans.api.java.source.gen.GeneratorTest.deepCopy(GeneratorTest.java:92)
	at org.netbeans.api.java.source.gen.GeneratorTest.deepCopy(GeneratorTest.java:92)
	at org.netbeans.api.java.source.gen.GeneratorTest.deepCopy(GeneratorTest.java:92)
	at org.netbeans.api.java.source.gen.GeneratorTest.setUp(GeneratorTest.java:106)
	at org.netbeans.junit.NbTestCase.runBare(NbTestCase.java:357)
	at org.netbeans.junit.NbTestCase.run(NbTestCase.java:228)