powerupgm

Yes, also as adminstrator

Yes, i realised that i had downloaded a version a little older but downloaded the new one. Still getting the same errors though. EDIT: I also have my steam located on another harddrive than the default C: drive

Did just what you said and when i launch it an error box comes up saying - No entry '.profilePathDefault' - then i cancel and the tickboxe appears, but then another error pops up saying "Error compiling pixel shader PSSpecularAlpha:0" and then is shuts down completely...