it is:

Traceback (most recent call last): File "FoFiX.py", line 29, in ? ImportError: No module named codecs

and i get it with my custom version i made at

http://code.google.com/p/fofixcustom/

do you know how to fix it?

oh and that is the only thing in my custom version log.

also i edited song.py and used the rest of the files

Wow, Wow, Wow.

Import error means you do not have all of the required python modules. I'm not sure why you are trying to make custom builds of FoFiX, but it is something we can do little to support. Esspecially considering the fact that the error is an issue on the User's side, not the program itself.