Pronto learns the code fine. The Cinema 6 and RS remote still won't learn the code, even from the Pronto. The next step is to dump the learned code, and replace it with the algorithmically generated code, make sure that that code works, and see if the Cinema 6 will learn that.

The behavior of the remote when it tries to learn the code is like this. It acts as if it learned the code, but when I try to use the button, it goes back into learn mode on that button (LED flickers for 10 seconds, or until I shoot it with a remote code).