SilverTW, I talked to you about this. :l
Canbeezy- You put all the map files into exports, right? If you can't get into the map and others can, it seems like it's a problem on your end only. And this could just be a simple mix up with where you put the files, or it could be your computer itself. Be sure all files for the map go into FeralHeart>Exports.
If the map has weather files, get rid of them.
Now this next option is a very old fix for this problem, and I doubt it will work, but you can try. Put the map files into your FH>media>terrains folder.
If all else fails, uninstall, delete EVERYTHING that has to do with FH, obtain a new download of the setup, and reinstall. This will give you a clean slate to work with and it might fix the issue. If not, your computer might just be one of the rare ones that hates maps.