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This issue has resulted in nearly a dozen bug reports sent by users of ANTLRWorks 2. Steps to reproduce: 1. Launch a platform application (we used ANTLRWorks 2), and then close it 2. Move the folder containing the platform application to another location (we tried moving it on the same drive) 3. Attempt to launch the platform application again This results in a message like the following: http://forums.netbeans.org/files/image002_501.png I found that deleting just the "var" folder under the user's generated .antlrworks2 settings folder resolves the issue, but it would be tremendously better if NetBeans itself could handle/resolve the issue without errors.
what version of NetBeans do you use? Your report says "7.4", but I doubt you are no such bleeding edge. If you use 7.2 or 7.3, then your issue might be duplicate of bug 208749. Please verify. *** This bug has been marked as a duplicate of bug 208749 ***