Hey, I have just run into this issue when importing my model from Blender. Why are the faces distorted? I have reconfigured the faces and tried editing the normals within the modeling menu, but still nothing seems to work.
It’s a geometry problem, I think.
Check you don’t have overlapping vertices, in Blender.
How do I do that? I have completely forgotten how to check it.
With a simple model like that, you can just zoom in and look to see if there overlapping vertices somewhere.
And the error you uploaded, suggests that is the case 
Brilliant. I’ll do that now.
Excellent that fixed it thanks so much. I honestly was looking all over to fix the overlapping verts. I remember there was an option under the mesh tab, but it has been updated since then and have now found where it is now located. Thanks for the help.