Game slows down when facing left

[Vampirel]

Its normal error message like always, says could not find some sprite and such, but the sprite it says is always ok. Well, 2.0 used to work well for my game, but then after some time I got these crashes. And yes, I did install C++, well, at least I hope I did...while installing it, files copies and suddenly it crash or disappear like it was done...dunno...

EDIT: I have installed c++ 08, is that enough?