How to Debug a Stack Overflow?
http://log0.wordpress.com/2008/12/05/how-to-debug-a-stack-overflow-for-beginners/

1. Load sympath:
.sympath <path to pdb files>
.reload /f                   #reloads current modules

2. Start program
g  #go

3. After crash


.symfix
.reload /f
!address
!address -summary
!address -RegionUsageStack
kb
!analyze -v
dpp esp #check vftables on the stack.
san
kf # get stack usage per function