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NoClassDefFoundError...

 
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java.lang.NoClassDefFoundError: Could not initialize class org.netbeans.modules.uihandler.Installer
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.openide.util.SharedClassObject.createInstancePrivileged(SharedClassObject.java:641)
at org.openide.util.SharedClassObject$SetAccessibleAction.run(SharedClassObject.java:1001)
at org.openide.util.SharedClassObject$SetAccessibleAction.run(SharedClassObject.java:993)
at java.security.AccessController.doPrivileged(Native Method)
at org.openide.util.SharedClassObject.findObject(SharedClassObject.java:515)
at org.netbeans.modules.uihandler.EarlyHandler.publish(EarlyHandler.java:68)
at org.netbeans.core.startup.TopLogging$LookupDel.publish(TopLogging.java:798)
at java.util.logging.Logger.log(Logger.java:472)
at org.netbeans.modules.project.ui.OpenProjectList.log(OpenProjectList.java:1713)
at org.netbeans.modules.project.ui.OpenProjectList.access$1000(OpenProjectList.java:124)
at org.netbeans.modules.project.ui.OpenProjectList$LoadOpenProjects.loadOnBackground(OpenProjectList.java:374)
at org.netbeans.modules.project.ui.OpenProjectList$LoadOpenProjects.run(OpenProjectList.java:274)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)

I am unable to open my projects!!!
 
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IntelliJ IDE Ruby
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Please don't post the same question multiple times. Locking this thread.
 
Consider Paul's rocket mass heater.
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