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I accidentally created an "UI" package and then created the proper lower-case "ui" package. On OSX, with a case-sensitive HSF+ this creates two folders: ui and UI. The IDE seems to be confused by this as it shows me upon restart the empty "UI" package and doesn't show me at all the "ui" package with the classes. Both Projects and Files views seem to be unable to show both folders at once. Deleting the "UI" folder doesn't solve the problem as I now have two "ui" packages in Projects, one gray with no classes and the other with all the classes. Interestingly, in Files I see that the "UI" folder has all the files now and the "ui" folder doesn't show up at all. Might also be a Java bug, no sure. Product Version: NetBeans IDE 7.0.1 (Build 201107282000) Java: 1.6.0_29; Java HotSpot(TM) 64-Bit Server VM 20.4-b02-402 System: Mac OS X version 10.6.8 running on x86_64; MacRoman; en_US (nb)
I have a feeling I fixed that already, but I don't have Mac OS X to verify. Try in daily build.