so i've tried 4 maps now for terraria, and could only get one of them to work. every other time it says, no back up file found!! FAIL!! One of the times the download even came with the .bak file with the world, although that wasn't the time it worked. When it did, it was from me just double copying the file and renaming one. So my question is what am i doing wrong with the others? My copy is a torrent download, but i dont think that would affect it, right?