I have now had at least 5 crashes (2 on 837, 3 on 838) when changing wiggle power from low to high (low powered wiggle, then high powered wiggle). It crashes immediately after starting the first wiggle on high power. It would hang for .25ish seconds before crashing, rendering no new additional frames (no point gains, no additional pulsing off of "show bondable atoms" or movement on H-bonds). I have not run into any problems with low to medium, medium to low, medium to high, high to low, or high to medium. After restarting the client, the first wiggle (and subsequent wiggles) on high power is fine.
Wiskers :) (meow)