I have an 890 Pro which controls everything with a wireless extender. It works nearly flawlessly with the exception that it will not turn on the PVR from the watch tv activity. The PVR in question is the Motorola DCT6416 III from COX communications. It will turn on after going through the help menu and it powers off fine. The power toggle command in the device profile works fine also. Could the problem be a delay issue or is it more likely something else? Any help is greatly appreciated.

Yes, it's most likely the inter-device delay that needs to be increased. When powering on multiple devices it sees and tries to interpret a command for a different device and misses it's own power on command. The inter-device delay will cause it to wait longer to let the previous command clear out. The clue is that help always fixes it. When you use help to fix it there are no other commands being sent. Also it tells you the configuration is correct.

Increase the inter-device delay by a large amount (3000 ms e.g.) just to make sure that's it, then go back to the original value and increase it by 100 ms until it works reliably.

I thought that would help, but I thought I'd ask before diving in. I'll give it a shot. Thanks. I'll post the results here in case it can benefit someone else.

That was it. I found that I could keep the delay at 1500 (where it was) and just make the PVR power on last. That way I can keep the shortest delay it will recognize. Longer delay would have worked just fine too. Thanks again akirby.