ModEnjoyer

That seems to have fixed it, I haven't run into any problems yet. Thanks for the help!

Ok, removed that and was able to get through world creation. Got into the world but a few seconds in and it crashed. Here's the newest log: https://mclo.gs/05WXbzy

Sorry I think that's the wrong one. Here's the one: https://mclo.gs/oUvjPuo

https://mclo.gs/HOHjKtC

Ok I added lionfishapi and removed a mod that was not being accepted called bcparticles and it loaded. However, as soon as I went to try and create a world it crashed. Here's the log: https://mclo.gs/zxN8zII

Ok, I tried it, and the crash log seemed to say something about cataclysm. Should I remove that next? Here's the log: https://mclo.gs/fFjplKh

Still seemed to crash around the same time. Here's the log: https://mclo.gs/cnOnMJG

Didn't seem to load any more but I don't really have anything other than an estimation. Here's the newest log: https://mclo.gs/vep1Tdo

Ok it seemed to load around 90% this time so it's definitely progressing. Here's the log: https://mclo.gs/QBx7Svy

Ok so it seems to be making progress, this time it very clearly got past the "mod construction" section and loaded the the next bar around 70%. Here's the new log: https://mclo.gs/1qUSsUK

Ok for a split second it seemed to push past the "Mod Construction" loading bar but then it still crashed. Here's the log: https://mclo.gs/HlhwxOz

Alright I deleted those and any other mods that were dependent on those, but it is still crashing at the same step. Here's the new log: https://mclo.gs/WCW1sWk

Ok, tried that and nothing seemed to be different. I took another copy of the log after deleting and trying again: https://mclo.gs/k9PNQ63

Ok, I removed anything to do with quark or zeta and ran it again but ran into the same problem. Not sure if it is needed but here is the crash log without quark or zeta involved: https://mclo.gs/68LQsZ7

My modpack comprising of around 500 or so mods keeps crashing. The farthest I've managed to get is it crashing on the completion of the "Mod Construction". I've tried to do some research and it seems like it is a problem with some of the mods not working with each other, however I haven't been able to get past that. Here is the link to my latest crash log https://pastebin.com/b42EezDB.