java.util.ConcurrentModificationException
	at java.util.Hashtable$Enumerator.next(Hashtable.java:1020)
	at org.openide.util.NbCollections.checkedMapByCopy(NbCollections.java:126)
	at org.netbeans.modules.apisupport.project.universe.ModuleList.parseProperties(ModuleList.java:729)
	at org.netbeans.modules.apisupport.project.universe.ModuleList.scanPossibleProject(ModuleList.java:300)
	at org.netbeans.modules.apisupport.project.universe.ModuleList.scanNetBeansOrgStableSources(ModuleList.java:246)
	at org.netbeans.modules.apisupport.project.universe.ModuleList.createModuleListFromNetBeansOrgSources(ModuleList.java:214)
	at org.netbeans.modules.apisupport.project.universe.ModuleList.findOrCreateModuleListFromNetBeansOrgSources(ModuleList.java:204)
	at org.netbeans.modules.apisupport.project.universe.NbPlatform.getSourceLocationOfModule(NbPlatform.java:704)
	at org.netbeans.modules.apisupport.project.universe.BinaryEntry.getSourceLocation(BinaryEntry.java:89)
	at org.netbeans.modules.apisupport.project.queries.UpdateTrackingFileOwnerQuery.getOwner(UpdateTrackingFileOwnerQuery.java:70)
	at org.netbeans.modules.apisupport.project.queries.UpdateTrackingFileOwnerQuery.getOwner(UpdateTrackingFileOwnerQuery.java:50)
	at org.netbeans.api.project.FileOwnerQuery.getOwner(FileOwnerQuery.java:125)
	at org.netbeans.modules.java.project.ProjectSourceForBinaryQuery.findSourceRoots(ProjectSourceForBinaryQuery.java:43)
	at org.netbeans.api.java.queries.SourceForBinaryQuery.findSourceRoots(SourceForBinaryQuery.java:67)
	at org.netbeans.modules.java.source.classpath.GlobalSourcePath.createResources(GlobalSourcePath.java:272)
	at org.netbeans.modules.java.source.classpath.GlobalSourcePath.access$1600(GlobalSourcePath.java:72)
	at org.netbeans.modules.java.source.classpath.GlobalSourcePath$SourcePathImplementation.getResources(GlobalSourcePath.java:558)
	at org.netbeans.api.java.classpath.ClassPath$SPIListener.propertyChange(ClassPath.java:878)
	at org.netbeans.modules.java.source.classpath.GlobalSourcePath$SourcePathImplementation.firePropertyChange(GlobalSourcePath.java:607)
	at org.netbeans.modules.java.source.classpath.GlobalSourcePath$1.run(GlobalSourcePath.java:203)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:539)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:964)