I have this weird issue with imported fbx files from blender.
After light build the whole object is just black on black on black on just black, like this:
Typically, this resolves after i just recreate the whole object in blender again and again until it works… which is an annoying mess.
Im using the following import settings, which work ok for other objects, like the wall in the background…
After this i manually assign a material in UE, in this case just a simple white texture like this (works on other objects anyway):
I would have attached the files here, but the upload thing just tells me the file type is not permitted for the blend, the fbx and the ue asset… so i just put it to dropbox: