Message:

Failed to load mods: Error while loading recipe prototype "flowbob-check-valve-compression" (recipe): Value must be a string in property tree at ROOT.recipe.flowbob-check-valve-compression.subgroup
Modifications: Omnicompression

I've also reported this to the omnicompression discord

I'll have a look at it right now, thanks for reporting

btw MILLION THANKS for making the original mod

No problem. Apologies on not maintaining it and thanks for your picking it back up!

Anyway i checked, and APPARENTLY is not on my end

The Omnimatter mod was the culprit, and they are going to be pushing a fix in their next version

Sweet