Hiya, so I've been trying to get Quark-3.3-370 (AutoRegLib-1.8-54 and forge 43.1.1) to run along side my otherwise stable, tested modpack and it crashes with the error:

Failure message: Quark (quark) encountered an error during the common_setup event phase
java.lang.IllegalArgumentException: No delegate exists for value air

Here is the full crashlog: https://pastebin.com/AAc4vXdD

Same issue here : https://upload.illya.network/6sAnoRrRRO8m3JJEPiyihFPe

I think I managed to narrow it down to a certain combination where it starts crashing; Namely EveryCompat (v2.0.5), Biomes O' Plenty (17.1.1.150), their libs and Quark.
Here is the crash log which gives out the same error: https://pastebin.com/ZiWK9nY5

I am not sure on whose part the error is so incase it isn't Quark's error, I'd of course take it to the faulty mod's github.

every compat fixed it in the latest version

Thank you, it works now! Missed the patch somehow argh