Projector black at any resolution when connecting MacBook Pro Retina A colleague of mine bought a brand new MacBook Pro Retina. She wants to use it in lectures in connection with a projector. I can't tell what brand the projector is of since it is a very big lecture hall. But it is definetly a good and expensive one. So I don't think the following problem occurs on that end of the connection:

Whenever she connects her MBP to the projector with a HDMI cable, the MBP seems to detect it and changes its resolution. But the display on the wall stays black no matter which resolution I choose in the system preferences.

Has anybody experienced something similar? Could it be a problem with the color profiles?
Opposite of your thoughts that the problem lies at the Mac end, I'd personally search on the projector first.  If the supplied signal is somehow out of range, the projector should beam some feedback by showing an error on the wall.

Perhaps you haven't selected the right source on the projector.  Does the projector handles a different HDMI source correctly?

Being such an expensive projector and all, connecting it to a (n old) Apple TV could do wonders.  It's cheap, neat, wireless and well implemented in OSX and iOS.  If your environment is Apple focused I won't hesitate and try it out.