hello, i am having a similar seeming issue with my Yamaha RXv673 receiver.  I have started receiving an "Access Error" message and can't figure out what the issue is.  I power cycled and also did a factory reset.  I went back and updated the IP address after trying the new IP address the factory reset generated.  The original IP works except for still getting the "access error" message from pandora (both on the AV receiver app as well as the actual receiver. ... View more