game magically erased?

[Shifty]

i get on to play and the icon is gone and ask me to erase because is no longer there. reinstalling game doesn't help I get a dxmfc.dll error? what happened? also should add it wont let me even do a setup for the reinstall. it pops up ask if im sure I want to do, I say yes. it disappears and nothing happens

[Shifty]

nevermind, its glitch but I kind of fixed problem. wont let me install latest patch without an error, but I can use the one before.