garbled graphics - fix?

I fumbled with my mouse while loading Vulture's Claw. I do not know what I option I selected or mouse button I mistakenly pressed.

The text messages in the pop-up windows are messed up and unreadable. From the first pop-up asking my name on the text are messed up and wherever my onscreen mouse moves the tile underneath is a horizontally aligned with the flat edges on the top bottom and sides instead of the corners. Also, the graphic tile under the mouse looks like the background graphic or default graphic for that area.

I am running vultures-2.1.2-claw_win32-1.exe on windows xp pro service pack 3.