Hey DrWags, thanks for reaching out, while the workaround you mentioned works I would advise against actually using it as the error will appear every time you attempt to launch the game and only shifts the issue instead of solving it (also did you do it for the correct package as the steps still mention the CK3 one?). The only patch we released for the game was yesterday with 1.05 'Gangster' update, so I'm not sure what update you got a couple of days ago.
Regarding the Paradox Launcher, the one provided with the MS Store version is a standalone version and installed with the package, separate from the Launcher that is installed with other (Non) MS Store Paradox Games. The Launcher is developed by Paradox independently and as you realised the issue isn't just with our game. I'll reach out to the Launcher Team to see if they have any more information regarding the issue, as the original CK3 Thread originates from back in March if I recall correctly.
Regarding the Paradox Launcher, the one provided with the MS Store version is a standalone version and installed with the package, separate from the Launcher that is installed with other (Non) MS Store Paradox Games. The Launcher is developed by Paradox independently and as you realised the issue isn't just with our game. I'll reach out to the Launcher Team to see if they have any more information regarding the issue, as the original CK3 Thread originates from back in March if I recall correctly.