Well, I’ve been scratching my head for a while under pressure with this issue. Apparently the latest version of 7.6.6 Quicktime and Maxon Cinema 4d R11.5 have issues interpreting ‘video textures’. When you add a video texture to an object the video is black. After some research i figured out what the problem was and the best solution for me.
SOLUTION:
Downgrade Quicktime! Version 7.6.4 (518.35) Works for me!
Download Quicktime:
http://support.apple.com/kb/DL760 (LINK UPDATED)
http://www.charlessoft.com/
The OS Wont let you downgrade, so you’ll have to use Pacifist to open the Quicktime package. Once you do so, click install!
VOILA!

WOW MANNN you are my hero!!!!
I been struggling with this problems for months …
Thanks.
W00t! Glad it helped you out !
Yeah, man. thanks very much.
One problem, installed QT 7.6.4 then can not launch Cinema 4D! Help, please.
Quicktime shouldn’t have anything to do with cinema launching…
Thanks. Let’s try if it works, i’m gonna post the result here soon.
Didn’t work.
Oh, I forgot to change the Timing to Range.
Glad it worked out for you!
-Francisco