OK, here is what I found. I could not get REW/ASIO working with the front panel HDMI connection. When I switched to a spare HDMI connection on the back, I was able to get REW/ASIO working with some fiddling around (re-boots, switch to Java and back, prayers to the deity of your choice).
At this time, I don't know if the front panel HDMI connection is working properly--I'll test that out tomorrow. I seem to remember a similar issue with my 8801, but I don't remember how it was resolved. In the meantime, try a different HDMI port and report your results.
I will report back on how things work out tomorrow Jerry. Thanks again!
Same issue on my denon, front hdmi is pretty much useless, you should just avoid it. Seems like a serial error.
If indeed the front HDMI connection is not working, I would consider that a faulty unit. If I can't get it to work, I will report to Marantz technical support for their advice.
I have no issues using REW with the front HDMI on my Denon 4520.
I finally got REW to recognize both my UMIK and my Marantz. It was definately the front HDMI input that was causing the problem. Not sure if it is worth a call into Marantz or not...