I have been recently having the same problem with my Yamaha receiver. One thing I did last night and have yet to have the error message is replace my optical audio cable. I had a digital optical from my PS3 to my receiver, but since I have replaced it, I have yet to have the error. Just a thought. This may also be why the tuner and aux inputs don't have the same effect. Is everyone else using a digital optical audio that is having this problem?