first of all, welcome to the forums a legal version would be either paying for it and downloading it, buying it in a store, or buying it online. if you did any of those things its legal. if not, then you probably shouldnt be playing it and the ppl who sell it illegally might have screwed it up somehow. either way, i suggest deleting all the files from your computer and buying the full game from the internet or a store. hope you can get it working!