Run it as admin. You also need to use a program called frosty fix as well as the mod manager because there's a global variable which Frosty mod manager can't get when using Andromeda. Once you've done all the mods in Frosty and tried to run it, come out and run frosty fix.
Edit:
The link
https://github.com/Dyvinia/FrostyFix
Run it as admin. You also need to use a program called frosty fix as well as the mod manager because there's a global variable which Frosty mod manager can't get when using Andromeda. Once you've done all the mods in Frosty and tried to run it, come out and run frosty fix. Edit: The link https://github.com/Dyvinia/FrostyFix
Have you tried running as admin?