Upgraded from 3.4 to 3.6: newly added content is not found [SOLVED BY MOVING THE CODE TO NEW PROJECT]

I recently got my project to 3.6, and now, even after updating the .mgcb, my project will throw a ContentLoadException whenever I attempt to load .png files I added since then.
However, they do build to .xnbs to the correct debug folder, and I have no clue why they aren’t found…
Any ideas?

Check the inner exception of the ContentLoadException to see where it expects the assets to be

Fixed it by creating a new project and moving everything to it…