Puck - I believe you, so now I have to ask, are you sure?
What do you see in the Activity Monitor when you press the ARM button of a KR10a? How about Disarm? Lights-ON? Lights-OFF?
And if it is a Security Remote, what's the difference in PLC's when you press ARM-Home vs. ARM AWAY vs. DISARM? What does it send for Security Lights?
I installed a KR10a, told it to transceive B3, (B3 is the KR10a's address in AHP) closed=ON, open=OFF. It captured just fine, and the upload checksum was OK. Pressing any of the buttons worked the DS7000, and the associated AHP macros (Triggering on a registered KR10a), but I got NO B3 PLC's of any kind.