Checksum is wrong, claims I'm using a mod but I don't have one

[Gytocks]

I got a bunch of new DLC and started playing, but I couldn't use Ironman, or MP because the checksum was PAQX, but I need to be on PXTU.... The game claims I am using a "User Modification" but I don't own any mods. In the small window where I click play the checksum is correct but when I do start it says "building checksum" and then gives me the wrong one! Please help, I'd like to get back to playing!

 

[AndrewT]

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

- move any valued save games elsewhere
- "uninstall" in Steam-CK2
- manually delete both the Steam/SteamApps/common/CK2 AND Documents/Paradox/CK2 folders
- re-install game in Steam, run a Steam Verify when done.
- start the game with no mods active and test

In particular make sure there are no files or folders left under either the Steam CK2 or Documents CK2 locations, before installing again.

 

[Gytocks]

Thanks, I'll try that.