"GPxPatch's settings of the mod" on CSM not working?

Hi everyone! I reinstalled GP4 again recently, but ran into a bit of a problem. The game, the mods and CSM all work perfectly, except for one thing - when I click on "GPxPatch's settings of the mod", nothing appears, the whole thing is just blank.



I reinstalled everything, but the problem still remains. I've played GP4 countless times on this same computer without any issues, so I'm surely doing something wrong this time, I just haven't realized what yet!

Has anyone else experienced this? Any solutions? Thanks in advance!