So, strange outcome on this. Turns out, I'm 90% positive that this full crash to restart on rendering was a problem with AE preferences. I was having no problems rendering in the new windows user profile on the same machine until I imported the old preferences from the "problem" user profile. Went to render, and again it crashed immediately, blue screen of death, reboot, everything. I thought I was having crazy hardware problems. Then I took the original clean prefs from the new user, imported them back into the problem user profile, and now it's fixed. This may have been a result of inheriting prefs from 12.0 to 12.1 to 12.2. So I'd be careful about doing that in the future. will submit a BR