Road Hog4 Programmer Lockup

So, I'm programming a gobo look with rotating gobos. Road Hog4 and Martin MacIIIs. I want the two fixtures to rotate their gobos at the same speed in opposite directions.

I run the "Gobo <>" wheel to the desired speed, then select one unit, hold down the "-" key and touch the wheel. Yesterday when I did this, I got the desired result. Today when I do this, the Programmer freezes. I still have faders and playback, but no wheels or keys in the Programmer area. Can't even clear the programmer. Touch screen cursor follows the touches, but no buttons respond.

Everything comes back after a console re-set (which has to be hard-switched, because the "Setup" key doesn't respond), but I've been able to re-create this three times in a row.