Can you avoid the error by loosing? Unlikely, but you did specify the error was after Victory appeared.
Did you try re-installing the Microsoft Visual C++ Runtime Library, from the folder
..\steamapps\common\dragon commander\_CommonRedist\vcredist\2008\
Are you shutting down all non-essential programs before starting the game?
Have you tried lowering the resolution, or changing it to match the desktop resolution if it isn't already? Did you lower / change the graphics options? You'd think if that were a problem it would be entering combat, though.
Did you check for Windows updates, graphics drivers, etc?
Did you try any general crash suggestions in the topic above?
There should hopefully be another beta later today, so that may resolve the problem.
