UE4 Crashing (Datasmith Import and Saving)

I have a UE4 project in which I am trying to import about 30 Datasmith files. About 25 of them I am able to properly import into UE4, however, there are about 5 that I am having issues with. For these issue files UE4 either crashes during import when around 70% import is shown or UE4 crashes when I try to save the imported files. I have submitted an error from UE4. I would really appreciate help on how to resolve this issue. Thank you.