Getting this error at startup:

Failed to load mods: 
• factorio_hd_age_space_age_terrain_gleba
    • Dependency space-age >= 2.0.44 is not satisfied (active: space-age 2.0.43)

Mods to be disabled:
• factorio_hd_age_space_age_terrain_gleba (1.0.5)

v2.0.44 of Factorio / Space Age isn't "stable" yet, so could this be downgraded in the meantime? Latest stable version is 2.0.43, as far as I can tell.

Quick question, did you download the mod yourself via the mod portal or did Factorio download the version ingeme itself?

I'll walk through it - I had Factorio HD Age (and all of the associated mods) installed already. I launched Factorio (2.0.43 was just installed), it started fine. I went into the mod portal and saw that there were some pending updates to a bunch of mods, so I updated them, clicked "Confirm", which restarted the game. When it went to load everything again, it immediately crashed, giving that error. Hope that helps

I would like to ask you to uninstall the DLC and download it again via Factorio. I have changed the requirements, Factorio should now automatically download version 1.0.4 of the mod instead of 1.0.5.
Version 1.0.5 is relevant for those using the experimental version and allows me to provide a working update directly to the next stable version.