These wolves have mastered the art of levitation!

Almost all other units I've viewed have had correct portraits, but this one didn't. I noticed this problem while in battle against the wolves. I didn't look at the unit outside of the tactical view to see if it also did this there, but I'll check in the next battle and see if I get a similar issue with other units, though I don't think so.
I'm running an Nvidia 9600GT card and haven't experienced any other issues with graphic rendering.