I have CK3 installed (1.1.3) with the Paradox Launcher (not Steam or the V2 launcher). I have been trying to update it to 1.2.2, but any time I try to update the game, it stops and says "an error occurred" during the "downloading patch" part. I've tried downloading a different patch version and got the same error, then tried uninstalling and reinstalling the launcher, which also gave the same issue. All advice I can find from searching on this seems to refer to the Steam version.