I think the main singular issue is still around the passive AI for me. I just played a game and came out to sortie. The AI just stayed in formation as it normally does allowing me to shoot it in the back etc as before. It had however appeared also with siege bits (ram and ladders) on the 1st go of the siege (didn't think it was suppose to build them so quick) and then refused to put them down to fight as I walked around them!

On the plus side the earlier crash I had with sieges was me being stupid. I had copied over my older CFG file and the new cfg had more attributes generated than the old one so I'm guessing that's why I then had problems.