Indeed.

Isn't it EWA by any chance? Because I have the same issue... the game sees the map... but says it's corrupted... and you can't fit anything decent into 3 KB (
....

No, it's the regular version. If I put it in the maps folder, it doesn't see it. If I put it in UserCampaigns, it says it's damaged. What's causing these problems out of nowhere?

Or should I put them in the maps folder individually?