[robross0606]

It worked! I copied all of the files from the Local Cache\Roaming\Kodi to the Local State folder, and everything is back to normal. All repositories and addons are restored.

Thanks so much!

Are you actually able to access any of your local data if you have any?  As far as I can tell, v18 has no access to any hard drive paths. 

This might be another UWP limitation, if you are trying to access locally stored media files then something in the back of my mind is whispering it might be due to file system restrictions imposed by Microsoft. 

I've installed the EXE version and have been trying to migrate everything over.  There's just a huge amount of data that was completely lost.  All custom cover settings.  All collection settings.  Across hundreds of movies and shows.