When you start the mod on a sponge server the mod loads a class before sponge so you get quick crashes.
Here is the log

Everything works fine with that modpack in singleplayer

issue addressed on curse page

This issue is not related to that one and is still present in 1.1

just released a new version which may fix your issue. I'm not too familiar with SpongeForge, so can let me know if it works if you can! :)

I will keep you updated! For now it seems the error is still there, if you can find the source of the problem it would be awesome! This mod is amazing, sharing the experience on a server would be incredible!

I think I actually fixed it this time lol

You did it!