HELP: CD player installed and reads "no CD's available"?

Hi, I recently installed a trunk mounted CD player and after installation and the magazine filled with CD's, my radio display says "no CD's available"? Any ideas on what is going on? Thanks, Mike

Verify the connexion. I had the same problem when I placed a CD charger on my 530d, there was one wire which was not connected. After that, it worked correctly.