I can select it in the Browser on Version 3.0.169.748, but when I try to edit it, the Engine is crashing. At least this was the Engine Version, I used to create the MOD/Campaign, but I have not used it for about a year. ;-)

[Linked Image]

[Linked Image]

When I try to edit one of my custom maps, it crashes with the following error:
File 'C:/Users/Mjöllnir/Documents/Larian Studios/Divinity Original Sin 2/PlayerProfiles/Mjöllnir/profile.lsb' has version 3.1.8.0, which is too new for serializer with version 3.1.6.0!