I got a warning on this game, too. I tried deleting the folder (the game sadly isn't for me. It looks well put together, I just don't like the characters much) but the .tmp file threw up a red flag. It refused to be deleted, even though I'm the administrator. I finally had to have it scanned for viruses, and that's when I got the 'Password Stealer" warning and the file was moved to quarantine.