I should note that my issue in 3.05 doesn't happen every time (in fact, I went almost 400 turns without running into it). I did build several wonders, including stonehenge and the terracotta army, and I have wondrous wonders installed, so when I conquer a city, a pikeman is spawned on the same tile. not sure if it's related or not due to small sample size, but I think it might be caused by razing the city while my old unit and the pikeman share the same tile. however, after restarting the game, I repeated the process and the city razed just fine with no crash.
I should also note that every time I capture a city, the game lags a bit (right before the unit that takes the city actually tries to take the city), and razing the city takes a while. it could be that it's just my system timing out, since I also have ynamp and this game's eating up all of my RAM, but considering I went 200+ turns in one sitting wiping out the kongo without getting this bug to happen, then going 5 turns and having the bug happen right away, then going 20 turns before it happened again, it just seems odd. I thought that it might be the same bug as the others were having, but if it's caused by a line of code that's not even in the 3.05 version, then I guess I have a different issue.