This could be TeamCofh's fault, so sorry if it is and I wasted your time.

Whenever a world loads with Cofh Mods and Qaurk together (tested, world runs safely if either is disabled), it causes a crash to occur once the world has been generated. I can go back to the world safely afterwards, but it is still annoying to have to load the game twice.

Crash Log: https://pastebin.com/LgeFv7xz

The error doesn't point to any mod in particular. Though the divide by zero exception is weird. Perhaps a CoFH mod has a recipe group with no items? @KingLemming, can you test this?

I decided to try to run it with only Quark and COFH mods and it worked fine

Would this imply, somehow, another mod is effecting both in a way that makes them not work together, however that would happen?

You'll have to try to find which of the others is breaking this then.

This has nothing to do with us. This is an issue with having too many recipes in general.

See MinecraftForge/MinecraftForge#4124

Ah, thanks for the information, and sorry for bothering both you and Vazkii over this. @KingLemming

No worries. It's a cryptic error, to be sure.