It is most likely something minuscule. The way I add custom media to levels is import Mesh and Texture, drop the texture on mesh and that creates a custom material for that mesh for edits.
However I have a table top lamp so I want to use the class blueprint so that I wouldn’t have to position lights under each one. (this is an office level so you might imagine…) However when I drop the mesh into the class blueprint components, it looses its texture and material and I can’t seem to figure out how to re-assign it back.