Need Advice on Game Crash

[Krotos]

I just downloaded WinSPMBT and am eager to play it. Unfortunately, the game crashes to desktop after being in a battle for only a few mins. It happens every time. I have the latest patches to v2.51 and my computer's drivers etc are all up to date. Sometimes it even crashes when I am trying to set up a campaign. I uninstalled the game twice and reinstalled it on a defraged drive...can anyone offer an opinion on what is going wrong. I loved the old DOS version of the game, and am willing to buy the CD version...but needless to say, I won't if I can't get it to work.

Thanks in advance