The "unarc.dll returned an error code -6" message is a frequent obstacle for FIFA 13 players, especially during the unpacking stage of a game installation. This error typically signals that the or that the system failed to read it properly during decompression .
What (10 or 11) you are currently running. The "unarc
If you continue to experience errors, it may be necessary to try a different, non-repacked version of the game. non-repacked version of the game.