Comment 7 for bug 1106876

... But my terminal output now shows me this:

"Uncaught TypeError: Cannot read property 'uncommitted' of null", source: chrome://settings-frame/options_bundle.js (2616)

Where line 2616 is:

 // Listen for pref changes.
 Preferences.getInstance().addEventListener(this.pref, function(event) {
> if (event.value.uncommitted && !self.dialogPref)
     return;
   self.updateStateFromPref_(event);
   updateDisabledState_(self, 'notUserModifiable', event.value.disabled);
   self.controlledBy = event.value.controlledBy;
 });