Help! Masks have stopped tracking:(
 

My masks for color correction, brightness, pretty much anything have stopped automatically tracking for Premiere Pro CC. I push the forward button and either it starts to process the tracking but stalls before it advances a single frame or it just ignores that I've done anything at all.

I'm using the latest Mac Pro trash can and only editing in Pro Res HD so I don't think I'm giving the computer too much to tackle--but even if I was wouldn't it be rendering slowly instead of not at all?

Is there any idiot button I might have pushed? And yes I did reboot:)