I got a little anxious killing an annoying process. My first instinct was to use Task Manager (oops). It was taking a little long for my liking so I switched to Process Lasso and terminated the process there. This what appeared to occur:
Task Manager killed the process before Process Lasso at which point Process Lasso GUI crashed.
The governor appears to be unaffected and you can restart the GUI without issue.
Thanks for the report. Yes, the timing here was likely the problem. By the time Process Lasso got to the process, one or more of its pointers to the process were invalid. I will work on fixing this.