Crashing for me again too, seems like the problem is back.
Have also had the lag problems you linked. Our headless client is running a very small amount of code with no intense or taxing loops, under 10 A.I. units, and still having problems...
We tried placing our HeadlessClient in a fresh WinXP machine, and still it has continued crashing...So we tried making it only 1 AI unit with nothing extra, and STILL it is crashing at seemingly random intervals!