Cant put material of Unity on mesh created with C4D

Titel says it, i’ve created a simple mesh with C4D (a Sphere), but when I put a Material on it, it only turns out like some grey and black areas on it. also the number of Polygons i pretymuch the same like the sphere in Unity but on the spere of unity i can put the material.
I also tryed to Export it to FBX, but nothing changed.

Little image (left one Unity Sphere, right upper one Polygon Object Sphere(C4D), right lower one Sphere Object(C4D))

alt text

since there are no answers i played something around, and figured out that it will work when exporting the mesh to “3D Studio” will solve the problem.
The only thing you need to change is the scale factor of the mesh in Unity, because c4d has 0.01 and 3ds has 0.1 → change this to 0.01 and all should work the way you want!