I tried the "fix" that seemed to work when I had this problem before (renaming DLC folder to dlc.org and repairing) but when I bought another DLC it recurred. I have these in my oldest folder - DLC.oldest:
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC.older\DLC2_MegaEvents"
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC.older\EXP2_Crusade"
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC.older\EXP4_Retribution"
This is what's now in DLC.old
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC.old\DLC2_MegaEvents"
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC.old\EXP2_Crusade"
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC.old\EXP3_Intrigue"
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC.old\EXP4_Retribution"
And DLC now contains:
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC\DLC2_MegaEvents"
"E:\SteamLibrary\steamapps\common\Galactic Civilizations III\DLC\EXP2_Crusade"
When I had the problem last you weren't able to locate the licences for the four DLC I believe I purchased but at the very least I would like to be able to play using the ones I definitely can show I own via steam. Considering I have been buying your products at least as far as 2006 I would frankly prefer if you would just "give" them to me via one platform or another so I could uninstall and reinstall the whole thing and play it!
Computer specs:
Device name AlienwareR3
Processor Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz 2.80 GHz
Installed RAM 8.00 GB
Edition Windows 10 Home
Version 21H2
Installed on 2020-09-15
OS build 19044.1645
Experience Windows Feature Experience Pack 120.2212.4170.0Device name AlienwareR3 Processor Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz 2.80 GHz Installed RAM 8.00 GB Edition Windows 10 Home Version 21H2 Installed on 2020-09-15 OS build 19044.1645 Experience Windows Feature Experience Pack 120.2212.4170.0