Model FAIL (Cinema 4d)

When i export my FBX file i have made in Cinema4D, this will happen:

Can someone PLEASE help me!?!?!?!?

Thanks!

It’s probably because there are some bumps in the model. It’s sometimes hard to see in modelling programs, but when you change the lighting around shadows will appear at the bumps. Go back the program and try to smooth out the model.