At least you get to start a campaign, more than some other Vista users have been able to . Is the latest SVN version working for you BTW, or haven't you had the chance to download that yet?

Are you talking about a specific battle, or any battle? There might be some sprite issue left; even though I checked all the root sprites I didn't check the 001, 002 etc files. I don't know what makes the game use this or the other though, perhaps unit size or graphics quality setting? If it's a specific battle, which units are involved?