I've had the Harmony 900 for a year now and it was working perfectly for my Samsung DLP TV and Nakamichi AV1 receiver. Just bought a new Samsung Plasma ( PN64D800) and a Denon AVR-2112. Made the changes in the desktop software and updated my remote. The Samsung is controlled by IR and the Denon is in a cabinet so controlled by RF. Everything works fine when I click the activity Watch TV (i.e. both the TV and Denon turn on and are changed to the correct sources). But, once in the activity mode, the remote will not operate the Denon over RF. The strange thing is that, when I click on devices and select the Denon, the remote operates perfectly and sends commands to the receiver over RF (I can see the RF icon in the upper right hand corner of the LCD screen on the remote). But, as soon as I go back to the Current Activity, the remote no longer sends commands to the Denon over RF (i.e. the RF logo does not appear). Anyone know how to fix this?