Random pauses.

This started yesterday.

Randomly throughout the cut the machine will stop moving and sit in place. At this point I can pause>start and it will continue where it left off. Sometimes I cannot recover from it and every button seems to do nothing. I can run the same code multiple times and it will stop in different places. Occasionally during and on the off-chance that I can get the cut to finish after multiple interruptions, the interface of control changes and theres all of a sudden a new set of controls for an A axis (Orange, rotates) and usually when I see this I've lost the ability to click on anything. I've disabled the 3d viewer because ive noticed from past post that it was a previous issue and no change. Any ideas? When did the new control update happen? And if this is corresponding, can I install an older version?