It was working perfectly fine last night but now I'm getting an exit code -1 with the textbox:

The game crashed: rendering overlay
Error: net.minecraftforge.fml.ModLoadingException:
Supplementaries (supplementaries) encountered an error during
the done event phase

Here's the crash log: https://pastebin.com/KmesArYS

Any help is apricated

This mod runs into a conflict with creeperoverhaul

 

Make a test without creeperoverhaul

@TileEntity it seemed to work, but do you know of a way i could get the two mods to play nicely with each other? Im just trying to add supplementary to a modpack (and most of the mods dont play nicely with neoforge) so i cant exactly remake the whole pack.

are you using Optifine? if so it is not supported with the supplementaries mod and it can cause crashes easily.