User blog comment:Sasha Dawg/I Can't Play Terraria! Help Wanted!/@comment-4530673-20120822132328

Hey, I'm pretty sure that it's a problem of having your Terraria file missing. Did you rename your Terraria file? If so, make sure to change it back. That file is located at Program Files>Steam>Steamapps>Common>Terraria, if I'm not mistaken. Otherwise, try redownloading Terraria. It should fix the problem.