add: RemoveToolbarPrefListener();  
context: function EditorShutdown(){  try {    var commandManager = GetCurrentCommandManager();    commandManager.removeCommandObserver(gEditorDocumentObserver, "obs_documentCreated");    commandManager.removeCommandObserver(gEditorDocumentObserver, "obs_documentWillBeDestroyed");    commandManager.removeCommandObserver(gEditorDocumentObserver, "obs_documentLocationChanged");  } catch (e) { dump (e); }   }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/794690e9396580ea568f1ea4a4b3d75ddbd82a75/editor.js/buggy/editor/ui/composer/content/editor.js