Apple+M won't mute selected regions

[faultyrec1]

Since I upgraded to PT8.0.1, my old stand by "Apple+M" command won't mute my regions. When I click on it from the drop down menu it works, but the key command doesn't... any ideas?

Macbook Pro
2.4 Ghz Intel Core 2 Duo
4 GB 667 Mhz DDR2 SDRAM

PT LE 8.0.1
002 (w/ faders) controller

[JazzyJ]

Try the new 8.0.3 update.

All the Snow Leopard users have been appeased........

[faultyrec1]

thanks for the reply JazzyJ, but I have an original Mbox that I use on the road, and PTLE 8.0.1 is the last that will support it.

Any other ideas?