Game constantly shuts down??

[floatycoat]

Hey, when ever I load the game it constantly just shuts down, although it may run for like 30 mins first if im lucky.
Even though I can sometimes play the game for a short while, whenever I interact with a castle it INSTANTLY shuts the game down 99% of the time.
Also when loaded I get KB.exe has stopped working and find a solution.

I have recently installed the new graphics drivers (TodaY) did not work, turned off anti aliasing or somethin and the other 1 which also did not work.
I have tried running this into compatability mode for every windows xp and vista. Sometimes I get a directX erorr also cant remember what it says -1 -1 or something ( It is version 11 up-to-date).

Any ideas? And is it just me or is this the buggiest game you/I have ever played.