Got my eMate300 keyboard working with wired USB on a Teensy 2.0, and then with my own PCB no less.

But I've bogged down early. I'm wondering if "Soarer_Controller_v1.20_beta4_atmega32u4.hex" works properly on the 2++.
I can use Teensy.xe to download "blink_fast_Teensy2pp.hex" to it without problem - the LED blinks, and I hear the expected "BE-doop. Do-BEEP" sounds from Win7 when I do so. If I use Teensy.ex to push down the Controller hex file instead, all I get is "BE-doop", even if I unplug and re-plug the cable. And ScInfo.exe cannot find the controller either.
Thoughts, anyone?