I read somewhere on this forum that Warband uses up to 2gb of RAM memory, and when it surpasses that number, it crashes...so I tried with lowering the number of rag dolls and it worked. Maybe you can try changing some options (mainly graphics options) and test it, maybe try with cleaning the cache files on your computer (try using CCleaner program, it's free and I use it too). Otherwise I don't know how you can solve it, try searching a bit more on this forum or if someone who knows how to solve it replies to this topic...good luck in any case