about 5 years ago - AndrewT - Direct link
I just tried the mod "US Overhaul Dynamic - extended topbar" and it loaded and worked fine for me. Can you . try JUST that one and see if it works?

If not, are your Steam installation, the Steam Library that this game is installed in, and your Windows User folders all on the same volume?  
about 5 years ago - AndrewT - Direct link
I frankly don't know anything about mods themselves or what should or should not be in the .json files. Hard to understand why the same mod works for me but not you though.

Please do a full **clean** re-install:

- move any valued save games elsewhere, and user_empire_designs.txt from /Documents/Paradox Interactive/Stellaris/ if you have made any custom empires or races.
- "uninstall" in Steam-Stellaris
- unsubscribe from ALL mods in the Steam workshop
- manually delete both the Steam/SteamApps/common/Stellaris AND Documents/Paradox/Stellaris folders
- re-install game in Steam, run a Steam Verify when done.
- add stellaris.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.

In particular you need to make sure there are no files or folders left under either the Steam Stellaris or Documents Stellaris locations, before installing again.

- run the game up, start a new test galaxy, then exit the game fully
- then subscribe to that one mod again, see if it works for you then.

Good luck!  
about 5 years ago - AndrewT - Direct link
I don't know how to fully disable oneDrive, I am sorry.

To redirect where the game stores its user files, including mods, place the attached userdir.txt file in the same folder a stellaris.exe - it tells the game to write the user files right there instead of under the Documents folder. If that works you can replace the dot in that file with any file path you prefer.