I have been able to bypass the crash by wiping out the Arverni (and then strangely having the general who happened to be a Conquerer of Gauls bribed away by the Aedui). I don't think it was a revolt bug because it was the Arverni's capital and last city. It was Gergovia or something like that, right north of Massilia. It's been smooth since then, it's 214 or 213 now. Though I should have an old save that should reproduce the crash if you'd like.