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When attempting to start Netbeans 5.0 on a project that I had been working on yesterday I received the attached error and was unable to successfully open the program
Created attachment 26151 [details] Error Log
Deleting the .netbeans\5.0beta folder then restarting NetBeans is a workaround.
Fixed. The IDE should now recover automatically. Checking in JMManager.java; /cvs/java/javacore/src/org/netbeans/modules/javacore/JMManager.java,v <-- JMManager.java new revision: 1.124; previous revision: 1.123 done