Unreal Engine 4 meshes not importing with textures

I’m running into an issue working in Unreal Engine 4.27 where, after importing a USD scene and populating it using Live Edit, after awhile, the materials stop getting transferred over to Create. I’ve even tried bringing in a second copy of a mesh that imported fine earlier and it now imports unshaded.

Am I running into a texture memory limit?

Or maybe something else?

Did you try restarting UE4 editor to reload the stage?
Also, how’s the stage in Create? I just wanted to make sure the material binding is still working.