Hi,
Just spent a couple of hours figuring this out so thought I would share it and save someone the time. Apologies if this is a duplicate but I couldn't find it.
It all started from this thread:
https://af.gog.com/forum/stellaris/...nage_workshop_mods_successfully?as=1649904300
Which explains how to get Stellaris mods from Steam to GOG. For me the Paradox mod installer just didn't seem to work and most of the mods on there were out of date in comparison to Steam.
After installing a couple of mods I discovered that my Documents folder was exploding since this is where Paradox puts all the mods. Since this folder is synched via OneDrive this was a bit of a problem.
So, here is how to fix it:
1. Create a new folder (outside OneDrive) where you want all your Stellaris mods and save files and setting etc to go, e.g. "D:/ParadoxInteractive/Stellaris".
2. Copy the contents of "Documents/Paradox Interactive/Stellaris" into that new folder
3. Rename "Documents/Paradox Interactive/Stellaris" to something else for now.
4. Locate (or creaet the file "userdir.txt" in the Stellaris installation folder (beside "dowser.exe") and put the path the the new folder e.g. "D:/ParadoxInteractive/Stellaris" (without quotes) into it.
6. Locate a file called "launcher-settings.json" beside "dowser.exe" and edit that file (take a copy of it if you are worried).
7. Change the line containing "gameDataPath" to point to the new folder, e.g. "D:/ParadoxInteractive/Stellaris" (this time with the quotes).
8. Start up the Launcher and a game and make sure everything works.
9. Delete the old (renamed) Document/Paradox Interactive/Stellaris folder.
10. If you use Irony Mod Manager (from the above thread) remember to change the path to this folder in there too.
If anything goes wrong simply change things back (remove the userdir.txt file and undo
I believe this trick works with other Paradox games but as I am not playing those at the moment I cannot verify it.
I hope this helps someone.
Update: I am not sure yet but this process may break the GOG Galaxy Cloud Sync feature. It could be an unrelated glitch.
Post edited February 10, 2022 by Dingbat Doodlehead