Space Exploration uses the "fork_chance_increase_per_quality_level_chain_active_trigger" setting, but the config option in settings only shows up if space age is enabled, so the mod crashes on load with

Failed to load mods: adjustable-quality/data-final-fixes.lua:1: attempt to index field '?' (a nil value).

I've fixed it on my end by expanding the settings conditional for that on line 505 of settings.lua from:

if mods["space-age"] then

to

if mods["space-age"] or mods["space-exploration"] then

thanks for the feedback, I have been inactive for quite some time so its good timing that I checked comments just when this is happening. :)

I took a quick look, and the current implementation is this:
if mods["space-age"] or (mods["space-exploration"] and mods["quality-se"]) then

do you have a different quality mod enabled for space exploration?

I guess I can just remove the additional quality-se condition since it should be harmless. If you have this mod and SE loaded, you must have some form of quality loaded as well lol