Donny, I've gotten the error, basically the file "db_cat.png" is not found because of the underline ...

I then renamed the file to "db-cat.png" and then I changed the name in the file 'item-group.lua'

and the game started smoothly.

thanks, like in the base discus, i will change it when my ms and i are off my server :) - Dont want to update my server now because there are crying then xD - "Update again ?" Buhh ja :D

but thats strange, for me and my friends it works even when we load the mod alone.

do not worry, I've posted a small solution for those who want to play soon (like me)