After nearly finishing retamoto towers on coop my computer crashed, it showed bsod(blue screen of doom/death) and restarted.
After that when i open the game it would show a black screen following by 3 errors:

[img=http://img234.imageshack.us/img234/884/error1ye7.th.png]

[img=http://img234.imageshack.us/img234/5020/error2hn7.th.png]

[img=http://img234.imageshack.us/img234/1604/error3ue0.th.png]

To mention I upgraded my ram to 2 gigabytes from 1 gigabyte yesterday and until today i had no serious problems with the game.
BTW I ran memtest and my memory has no problems/errors.


Edit: The problem is as it seems my ed up "C" drive, so im OK and the game works now.