TY veru much for quick fix Trev!
Now, if you could somehow reproduce
campaign-museum/mission CTD or CTD in your test The Black Pit campaign, I'm pretty much sure that you'll know in which direction to look. And it looks like this is not new problem, CTD can be reproduced even with OHII 2.2. My best guess so far is that, this must be some kind of hidden incompatibility between OHII and TDW UI's and RPM hydro will somehow amplifies the problem. If we manage to solve this, the game will practically be 100% stable .
I think I already have minimal modlist when problem starts to kick in. I'll give it to you later.
P.S.
If I'm correct you still use FXU 0.0.21 and New UI 7.4.2, right? Are there any reasons for that?