Build: NetBeans IDE Dev (Build 20120217-e7f869275b98)
VM: Java HotSpot(TM) 64-Bit Server VM, 20.1-b02, Java(TM) SE Runtime Environment, 1.6.0_26-b03
OS: Linux

Stacktrace: 
java.lang.AssertionError: Entries: 94; vis. entries: 2; Infos: 89; entriesSize: 94; entryToInfoSize: 89
1 entry Children.Keys.KE[inmodeler/src/main/java/oracle/oer/domainmodeler/core/A_Test_Folder [invalid],0],0] -> null
2 entry Children.Keys.KE[odeler/src/main/java/oracle/oer/domainmodeler/core/A_SecondFile.txt [invalid],0],0] -> null
3 entry Children.Keys.KE[rc/main/java/oracle/oer/domainmodeler/core/A_SecondFile_renamed.txt [invalid],0],0] -> null
4 entry Children.Keys.KE[omainmodeler/src/main/java/oracle/oer/domainmodeler/core/A_Test.txt [invalid],0],0] -> null
5 entry Children.Keys.KE[racle/oer/domainmodeler/core/AssociationDisplayOptions_renamed.java [invalid],0],0] -> null
6 entry Children.Keys.KE[java/oracle/oer/domainmodeler/core/AssociationInfoDisplayBuilder.java [valid],0],0] -> EntryInfo for entry: Children.Keys.KE[java/oracle/oer/domainmodeler/core/AssociationInfoDisplayBuilder.java [valid],0],0], node: org.openide.loaders.FolderChildren$DelayedNode@5c8049eb[Name=AssociationInfoDisplayBuilder.jav
   at org.openide.nodes.EntrySupport$Lazy.setEntries(EntrySupport.java:1388)
   at org.openide.nodes.EntrySupport.setEntries(EntrySupport.java:102)
   at org.openide.nodes.Children$Keys$2.run(Children.java:1555)
   at org.openide.util.Mutex$1Exec.run(Mutex.java:1244)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1920)
   at org.openide.util.Mutex.postRequest(Mutex.java:1250)