texture distorted by models using extrusion (Cinema 4d)

Hi,

whenever I import models (.fbx or .c4d) from Cinema 4d into Unity, and in those models I used the function "extrude" on some polygons, the texture, which I then apply on the by "extrude" created polygons is screwed up. It looks like the applied texture would be a 1 dimensional texture (like only one line of the 2d Texture) wrapped around those polygon.

I was wondering if there was a solution or a way to rotate the texture in unity (if that would help?).

thanks in advance