Crashing?

[Byzantine]

I'm not sure if this belongs here or in report a bug, since I am unsure of the cause, but my game has been crashing (i'll have an error report next time it happens) while I am in the lumby cow pen.  I think it is happening when I am trying to bury bones.

Any ideas/anyone else having this problem?
EDIT:  Okay, so it isn't related to bones.

[Whackatre]

Stack traces (if any) do help.