JJJ65..........well, I can scarcely credit this but I just banged in your replacement simulation.xml file....nothing else was helping.....but I've flown 6 missions in a row now w/out the game quitting. I'll have to see another dozen work before I can start to breath easy....it's been months since I was able to see WOFF run consistently. So, a cautious but hopeful thank you. Nice one....will let you know if things continue on the up and up. Cheers!!
Honestly, gaw1, I think it was just due some kind of coincidence, but I wish you it stay persistent without crashes.
Good luck!