This worked for another OSX user 3yrs ago on OSX. Extract the file from
here and place it inside the "SanchoMod" folder located inside the "game" folder. I think this might just get you done.
This is the quote from that user:
So, let me know if it works for you to. Again, this is ONLY for S2. Don't use it for S3 or S4... bad things may happen.