Tim, I provided you with a 3dsMax file with a single asset. This one is re-imported from IPackThat.
Pls dont use the initial fbx that I provided, just export from 3dsMax.
I havent tested yet but I thought that renaming the re-imported asset in 3dsMax solves the problem.
I never import directly from IPackThat into UE, always back to 3dsMax. That is why I provided you with the max file. And the fbx export from Max with the asset fails, too.