Quxel textures not loading on imported assets

I took a break from a project I was working on a little while ago. Everything was working fine and I was making smooth progress, but when I opened it up in the editor today I noticed that many of the Megascans assets that I had imported were not loading their textures.

I checked that the textures were still applied to the mesh, which they were, but I can’t seem to get them to load to matter what I do. Placing new versions of the same mesh doesn’t do anything either, the textures still won’t load. This is only happening to Megascans assets, and it’s only happening to some of them. I can’t seem to understand what makes these ones different from the rest either. Can somebody help me?