Unknown cause for no smoothing groups fbx import error

Hello, this is trying driving me crazy. Ok so this is what’s going on. I have an fbx import from blender to unreal. I keep getting the “No smoothing groups found” error even though:

  1. I have tried all three options Blender’s fbx exporter has for smoothing; Edges, Face, Normals Only. Same thing on all. (I normally use face)
  2. This does not happen on other meshes I export from the same blend file with the same export settings.
  3. This seems to happen only for unreal. I imported the same mesh into substance painter and the smoothing imported as well (Has smooth shading instead of flat).

I’ll attach the fbx files and some screenshots. Hopefully you guys can help me keep my sanity. lol

The Basketball_Inflated fbx is the one that has the problem, while the the Basketball_Inflated_LOD_1 does not.

FBX Files: https://drive.google.com/open?id=0B_OAOG1PfXN7cXJGN25ReTYtY2c