Playing on Steam, Win 7 64-bit, 1.0.8 without the DLC, no mods. Whenever I try to start a game, at some point on level 1, I'll get "File named sprites/monster/blobby/blobby_atk_d.spr not found. The game will probably crash!" And then, yes, it immediately crashes. I have verified the game cache through Steam and it didn't seem to find any problems. What should I do?