@MirageUK Version 4.5.0.4 is not working with Fjell (Fjordur mod version).
I would like to give you more details but no error appears, the savegame simply does not load.
But it works fine with 1 year old save game of Fjordur (before became Fjell)
Save Game: https://www.dropbox.com/s/gfbm4gif2gcasfo/Viking_P.ark?dl=0