rem: if (oldMessage) 
add: if (oldMessage && oldMessage.parentNode) 
context: function showMessage(aIconURL, aMessage, aButtonLabel, aButtonAccesskey,                     aShowCloseButton, aNotifyData) {  var addonsMsg = document.getElementById("addonsMsg");  var buttons = null;  if (aButtonLabel)    buttons = [new MessageButton(aButtonLabel, aButtonAccesskey, aNotifyData)];  var oldMessage = addonsMsg.getNotificationWithValue(aMessage);  if (oldMessage)    addonsMsg.removeNotification(oldMessage);  if (addonsMsg.currentNotification)    gPriorityCount += 0.0001;  else    gPriorityCount = 0;  addonsMsg.appendNotification(aMessage, aMessage, aIconURL,                               addonsMsg.PRIORITY_WARNING_LOW + gPriorityCount,                               buttons).hideclose = !aShowCloseButton;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/ac84222ce0f9664c45b4eeaf64af4392924698ea/extensions.js/buggy/toolkit/mozapps/extensions/content/extensions.js