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I have a NetBeans UML project with several packages and several class diagrams. One of the packages is named "resource" and one of the class diagrams is named "Resource." After adding several classes to the Resource diagram, I am eventually unable to save any changes to the diagram. If can press the save-all button and then exit, NetBeans asks if I want to save the changes to the Resource component. Whether I save or discard the changes, the diagram reverts back to its original state when I reopen NetBeans. Changes I made to the underlying classes (new relationships, for example) still exist in the model, but they do not appear in the diagram. I have experienced this problem on MacOS and on WinXP.
Created attachment 81506 [details] Compressed Project Folder