All my Render Settings have disappeared. The windows are blank. I'm running Maya 2014 on a Mac. 2012 and 2013 are fine. Tried reloading a 2014 and Mental Ray fresh but no luck. This is the error i'm getting ...

]// Error: file: /Users/mtcgs/Library/Preferences/Autodesk/maya/2014-x64/prefs/scripts/mentalrayUI.mel line 634: Error evaluating argument at position 1 in procedure "miDebug".

Also tried a bit of code I found online for this problem by folks who've experienced it on previous versions ...

deleteUI unifiedRenderGlobalsWindow;
buildNewSceneUI;

But no luck there either.