Reply to APC W/Ableton Mapping Issues

Hey Guys/Gals,

I've just bought the APC40 to work with in Ableton, and mid track the mapping just drops out and the controller stops working with the program.

I made sure already Ableton is totally up to date, and I installed everything correctly. I also have been using new projects each time, so I know it's not reverting back to any old mapping.

Have any of you guys run across this issue?

Thanks much!