The flare tower in k2 does not burn hydrogen. After disabling this mod, everything is fixed.

compatibility with maraxis is lost

Just updated all mods I have installed and I'm still able to flare hydrogen just fine. What are you getting your hydrogen from?

hydrogen from electrolysis and condensate. thehydrogen from electrolysis and condensate. the problem appeared after the upgrade to version 2.0 of the muloon mod. to test only the mods of Krastorio Mulun and yours problem appeared after switching to version 2.0 of the muloon mod.

same problem here.

i tested it with hydrogen from electrolysis, on a fresh world with no other mods activated.

it worked for me until today lmao.. i guess K2SO updates kinda fuck with it everytime they happen?

Hopefully fixed in 1.8.1. Was able to reproduce it, and got it going again. Let me know if you see further issues there.