MCE remote doesn't work but Harmony does

Hi everyone-

I'm trying to troubleshoot a problem with my Openelec 2.0 setup (also tried daily builds last night).

I've used my Harmony One remote, setup for "Windows MCE" for months without issues. But the lag between key presses has gotten to me, and I decided to go back to my silver MCE remote. Battery voltage is around 1.8v, and the receiver on my box blinks with key presses. But it won't respond! I hooked up the keyboard too to test, and it responds just fine.

I've run irw, and it shows nothing. EVtest (I think that was the name) shows the receiver, but won't show any key presses.

Any starting points? I don't understand how a remote that used to work way back when would do absolutely nothing now, yet the Harmony remote emulating it works just fine.

Thanks, and happy new year!