This bug was originally marked as duplicate of bug 163666, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.

Build: NetBeans IDE Dev (Build 201006300001)
VM: Java HotSpot(TM) Client VM, 16.3-b01, Java(TM) SE Runtime Environment, 1.6.0_20-b02
OS: Windows XP

User Comments:
phild: Renaming template file.




Stacktrace: 
java.lang.IllegalArgumentException: Duplicate in children list: E:/htdocs/GemCart/templates/logoHeader.tpl
Children: [MasterFileObject[E:\htdocs\GemCart\templates\catContent.tpl@164fc56:15bdcd0,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\contentRightNav.tpl@16b0117:1fe0ea6,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\contentWide.tpl@148dbb:73c6bf,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\dynNav.tpl@1e04aa0:fd656e,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\footer.tpl@19315fe:e2386,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\index.tpl@1fe28a7:1b56848,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\logoHeader.tpl@1604f9a:147c01d,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\logoHeader.tpl@1604f9a:147c01d,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\navBlock.tpl@f2aa36:3e368b,valid=true], MasterFileObject[E:\htdocs\GemCart\templates\pageContent.tpl@18909c4:6f0cef,valid=true], MasterFileObject[E:\htdocs\GemCa
   at org.openide.filesystems.Ordering.getOrder(Ordering.java:101)
   at org.openide.filesystems.FileUtil.getOrder(FileUtil.java:2123)
   at org.openide.loaders.FolderChildren$1R.run(FolderChildren.java:160)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1957)