java.lang.NullPointerException
   at org.netbeans.api.java.source.SourceUtils.getDependentRootsImpl(SourceUtils.java:728)
   at org.netbeans.api.java.source.SourceUtils.getDependentRoots(SourceUtils.java:717)
   at org.netbeans.modules.debugger.jpda.projects.MainProjectManager.isDependent(MainProjectManager.java:163)
   at org.netbeans.modules.debugger.jpda.projects.MainProjectManager.getMainProject(MainProjectManager.java:112)
   at org.netbeans.modules.debugger.jpda.projects.RunToCursorActionProvider.shouldBeEnabled(RunToCursorActionProvider.java:192)
   at org.netbeans.modules.debugger.jpda.projects.RunToCursorActionProvider.access$100(RunToCursorActionProvider.java:77)
   at org.netbeans.modules.debugger.jpda.projects.RunToCursorActionProvider$Listener.propertyChange(RunToCursorActionProvider.java:233)
   at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:188)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at org.netbeans.spi.debugger.ui.EditorContextDispatcher.firePropertyChange(EditorContextDispatcher.java:487)
   at org.netbeans.spi.debugger.ui.EditorContextDispatcher.access$2100(EditorContextDispatcher.java:104)
   at org.netbeans.spi.debugger.ui.EditorContextDispatcher$EventFirer.run(EditorContextDispatcher.java:725)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1084)