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Build: NetBeans IDE 6.9.1 (Build 201007282301) VM: Java HotSpot(TM) Client VM, 14.2-b01, Java(TM) SE Runtime Environment, 1.6.0_16-b01 OS: Windows XP Stacktrace: java.lang.NullPointerException at org.netbeans.modules.uml.drawingarea.navigator.DiagramNavigatorContent.propertyChange(DiagramNavigatorContent.java:96) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276) at org.netbeans.core.windows.RegistryImpl.doFirePropertyChange(RegistryImpl.java:321) at org.netbeans.core.windows.RegistryImpl.access$100(RegistryImpl.java:69) at org.netbeans.core.windows.RegistryImpl$1.run(RegistryImpl.java:173)
Created attachment 101368 [details] stacktrace
Can you provide the context of the exception? What you were doing, etc...