Weird glass material problem

[BastiFntasti]

Hey fellow Keyshot friends,

I´m new to this forum, but even my teacher doesn´t know whats wrong with my material...

I have a model made in Cinema 4D, and as soon as too many surfaces get behind each other, the ones in the back appear matte black through the ones in the front. Is this a render issue or am i missing something?

Please find attached some example pictures, thanks in advance

[bdesign]

Hey BastiFntasti-

Increase the Ray Bounces (under the Lighting tab) until the black areas are resolved.

Cheers,
Eric

[BastiFntasti]

Hey Eric, that did the job, something so simple... 
Thanks a lot and thanks for the fast response, have a great day!