Okey @RetroHumanoid and @slashguns04, I found the problem in a quick search. The folder naming is wrong.
While the file calls the image in the path "Themes/Unified Refried/Images/Theme/Addons/_Consoles/Magnavox Odyssey 2/_Default.png", the folder is named "Magnavox Oddysey 2"
Change this in the xaml file and it should work!