Game doesnt launch anymore for some reason

[Mobhack]

If you have your computer set up as the default to "hide file extensions" - then set it to show all of them. (This is a very good idea for security anyway so you can see if an attachment is a disguised EXE file..)

If you have your computer set up to the default "hide system files" then its probably going to not show you any DLLS etc. So set it up to show all file types.

(I forget what Mickeysofts exact terminology for those boneheaded system defaults are, as I change them on the first installation of any new PC right away.)