Oh. Tell me more. You're the only 2 people reporting it.
File "game/mech_events.rpy", line 78: the yoffset keyword argument was not given a value.
It was also line 62 but I think it was in a different game file or something since I cant find it in the mech_events file, it didn't show up it my error text file for some reason. I got impatient and decided to put 10 for both and I was able to play afterwards.