Strange Error

[Burningdynasty]

HELP

 when I sent my game to my friend, so he could test it, He got an Error Message like ?323423-234234?? or something like that and the game crushed. So i wanted to  fix it somehow, and thought that maybe it isn't working because my game has some things that his doesn't so i copied all my data into one and tested it now I can't play it and when I  
want to go the Monstergroups theres an error the data 118314.12312 (or something like that) is missing and now I can't do anything. I don't want to do everything again. what shall I do to fix it?
PLEASE HELP ME!!!