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java.lang.NullPointerException at org.netbeans.modules.javacore.JMManager.scanFiles (JMManager.java:1077) at org.netbeans.modules.javacore.JMManager.resolveCPRoot (JMManager.java:1006) at org.netbeans.modules.javacore.JMManager.resolveCodebases (JMManager.java:815) at org.netbeans.modules.javacore.JMManager$2.run(JMManager.java:769) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:493) [catch] at org.openide.util.RequestProcessor$Processor.run (RequestProcessor.java:926)
Created attachment 37965 [details] message.log1
The MDR based model was replaced by javac base model.
Reporter try deleting C:\Documents and Settings\Lenovo\.netbeans\5.0\var\cache\mdrstorage directory it should help
Reorganization of java component