Hello, I get this error

"Failed to load mods: Error while loading recipe prototype "concrete-recycling" (recipe): energy_required can't be <= 0.001.
Modifications: Recycler › Space AJ Rebalance

Mods to be disabled:
• recycler (2.1.14)
• space-anal-justice (0.69.11)"

I cannot reproduce this crash. When I boot the game with just AJ with those relevant mod versions, everything works fine, and the energy_required for that recipe is 0.015.

I suspect you have an additional mod interfering here.

I think I figured out that the issue is that a different mod changed the concrete production recipe, leading the recycler mod to make a new concrete recycling recipe, followed by AJ reducing that time outside of normal bounds.

I have added a safeguard to AJ against this possibility in v0.69.12.

Ah, thanks. Before posting I tried to find if some mod was causing that but couldnt.
But your fix worked :)