So I'm running with a large suite of mods, and I added omnilibrary and omnicompression, I don't get an error when loading, but factorio just hangs, and hangs and hangs, until it consumes over 23 GB of RAM, and then it STILL hangs.
I am at a loss of what it could be. I'll try figuring out what mod it is, but that's one hell of a memory leak.

Okay, after careful checking, it has issues with Wear and Tear

EDIT: after careful examining, it's multiple mods that conflict with this one.

because of the mod disabling and reenabling, i have encountered an interesting error.
https://puu.sh/x6MPK.png

That's incredible lmao. I ran into the hanging problem as well... went from 23% of my 16gb ram to over 90% while loading. I decided to kill it at that point. It probably doesn't like reverse factory, or maybe it was thaumaturgic machinations.. maybe

The issue is when you got a lot of dynamic mods together you run up that wall.

I can run with "Compressed Materials" fine but if I use "Omnicompression" instead of the original "Compressed Materials" then I also run into the same 255 max ids issue. I had to revert to using "Compressed Materials" instead of "Omnicompression" due to that.