[Xavior]

Hi,
I'm new to pro-tools so please bear with me.
I'm running PT-M powered 7.3.1 on a Mac OS X 10.4.9
At first PT wouldn't even load but then I did the Apple Bundle Update and all was good until now.

For some reason the edit mode (shuffle,Spot,Slip,Grid) buttons will not work any more. They worked fine for a few days but now they just light up with no changes whatsoever to the edit window.
I've tried shutting down PT reset the puter and re-open PT with no luck.
Does anyone have any idea whats going on ???

It's very frustrating after spending all this money on a new Mac and Pro-tools to find out that there are all these problems. I hope mine is a minor one.
thanks ..Xavior