Weird - Invisible Mouse - Help

Was feeling Napoleonic and re-installed Napoleon:TW off Steam. Same computer, same every thing as before. But now in NTW the mouse pointer is invisible. It is still there as I can wander onto hot buttons, I just can't see the pointer. Any ideas on how to fix this as it is unplayable now?

UPDATE: Fixed, just needed to disable mouse options like trails. Much rejoicing and extra rations for the peasants.

Did you delete both Napoloeon folders before reinstalling?