I'm trying to get the compositor working but I seem to have picked up a bug. As soon as I click 'enable display composition' everything seems to vanish, almost as if xfce crashes completely. Although I can still move my mouse around my grey desktop and the cursor changes as I hover my mouse over my panels and different windows.. Which seems that everything is still there.

I've tried restarting xfce when this happens and it loads correctly. I even hear the system beep when the xfce tips load but nothing can be seen. It's almost like everything still loads and is still there but it's just full transparency.