I got a CTD in my KH campaign on Carrodunum rebelling.

Is this a known issue?

The CTD was repeatable and happened immediately on end-turn.

I tried adding the permanent fixes and the nerfed traits file. I also tried pressing end-turn without activating the background script.

I solved it by creating happiness buildings with process_cq.

I had captured Carrodunum from the Romani, I had left no garrison (I was raiding) and it turned out there was a Romani spy there.