So I made a multiplayer server while my friend tried to join with the mods I GAVE HIM, but he had an error about some recipe in the mod, that couldnt load.. I dont know whats happening, and why? Please help!

He now gets an error saying "Failed to synchronize registry data from server, closing connection", what are we doing wrong?

P.S: Im using falixnodes.

Issue fixed: he has joined the server, just had to do some job with it. Also nice #696 :)