org.openide.util.WeakListener$PropertyChange org.openide.util.WeakListener$PropertyChange[null allocation backtrace. application

Allocated at
org.openide.util.WeakListener.propertyChange() (WeakListener.java:192)
org.netbeans.modules.settings.convertors.SerialDataConvertor.isModuleEnabled() (SerialDataConvertor.java:219)
org.netbeans.modules.settings.convertors.SerialDataConvertor.org.netbeans.modules.settings.convertors.SerialDataConvertor() (SerialDataConvertor.java:79)
org.netbeans.modules.settings.convertors.SerialDataConvertor$Provider.getEnvironment() (SerialDataConvertor.java:772)
org.netbeans.core.xml.FileEntityResolver.findLookup() (FileEntityResolver.java:164)
org.netbeans.core.xml.FileEntityResolver.access$200() (FileEntityResolver.java:61)
org.netbeans.core.xml.FileEntityResolver$Lkp.update() (FileEntityResolver.java:489)
org.netbeans.core.xml.FileEntityResolver$Lkp.beforeLookup() (FileEntityResolver.java:455)
org.openide.util.lookup.ProxyLookup.lookup() (ProxyLookup.java:127)
org.openide.loaders.InstanceDataObject.attachToConvertor() (InstanceDataObject.java:1466)
org.openide.loaders.InstanceDataObject.storeSettings() (InstanceDataObject.java:333)
org.openide.loaders.InstanceDataObject.access$800() (InstanceDataObject.java:67)
org.openide.loaders.InstanceDataObject$Creator.run() (InstanceDataObject.java:1365)
org.openide.filesystems.EventControl.runAtomicAction() (EventControl.java:89)
org.openide.filesystems.FileSystem.runAtomicAction() (FileSystem.java:419)
org.openide.loaders.InstanceDataObject$Creator.createInstanceDataObject() (InstanceDataObject.java:1379)
org.openide.loaders.InstanceDataObject.create() (InstanceDataObject.java:302)
org.openide.loaders.InstanceDataObject.create() (InstanceDataObject.java:278)
org.netbeans.core.windows.PersistenceManager.createNewPair() (PersistenceManager.java:680)
org.netbeans.core.windows.PersistenceManager.lookupTCStringId() (PersistenceManager.java:333)
org.netbeans.core.windows.WorkspaceImpl.findMode() (WorkspaceImpl.java:319)
org.netbeans.core.windows.ModeImpl$1.performCommand() (ModeImpl.java:489)
org.netbeans.core.windows.DeferredPerformer.processCommand() (DeferredPerformer.java:189)
org.netbeans.core.windows.DeferredPerformer.putRequest() (DeferredPerformer.java:83)
org.netbeans.core.windows.ModeImpl.doDockInto() (ModeImpl.java:486)
org.netbeans.core.windows.ModeImpl.dockInto() (ModeImpl.java:426)
org.netbeans.core.windows.ModeImpl.dockInto() (ModeImpl.java:412)
org.netbeans.core.windows.ModeImpl.dockInto() (ModeImpl.java:400)
org.netbeans.modules.java.JavaEditor.createJavaEditorComponent() (JavaEditor.java:942)
org.netbeans.modules.java.JavaEditor.createCloneableTopComponent() (JavaEditor.java:928)
org.openide.text.EditorSupport$Del.createCloneableTopComponent() (EditorSupport.java:712)
org.openide.windows.CloneableOpenSupport.openCloneableTopComponent() (CloneableOpenSupport.java:165)
org.openide.windows.CloneableOpenSupport$1.run() (CloneableOpenSupport.java:75)
java.awt.event.InvocationEvent.dispatch() (InvocationEvent.java:178)
java.awt.EventQueue.dispatchEvent() (EventQueue.java:443)
java.awt.EventDispatchThread.pumpOneEventForHierarchy() (EventDispatchThread.java:190)
java.awt.EventDispatchThread.pumpEventsForHierarchy() (EventDispatchThread.java:144)
java.awt.EventDispatchThread.pumpEvents() (EventDispatchThread.java:138)
java.awt.EventDispatchThread.pumpEvents() (EventDispatchThread.java:130)
java.awt.EventDispatchThread.run() (EventDispatchThread.java:98)