Without Space Age I get the following crash:

Failed to load mods: Error in assignID: recipe-category with name 'chemistry-or-cryogenics' does not exist.

Source: plasma-mini-fluid-wagon (recipe).

Mods to be disabled:
• plasma_handling (1.0.4)

Hey there,

I don't have space age as a dependency because Space Exploration also has plasma when used with SEI-Fusion-reactor by xkyouchoux. This is also the case for HD plasma ducts.

Thank you for the report. If you think this is too confusing for players I should maybe add a warning on game start.

Maybe you can mark the mod as a "Space Age Mod"? SEI Fusion Reactor does this. I think it's done using feature flags in the dependencies JSON, but I'm not sure.

Though that wouldn't stop people with the DLC enabled, but not either of the required mods from getting the same error.