It seems that this might be a good time for you to try to sniff what is going on over the air.
I'm using the Perytons Analyzer (www.perytons.com) and I'm quite happy with it.
They support a quite nice of protocols including all ZigBee profiles as well as RF4CE and 6LoWPAN and what is (more) important, they provide a free 30 days eveluation download so you can try them out and even capture your live data (even in the 3 x RF4CE channels during voting simultaneously) if you have any of their supported front-ends.
You may want to try them out.
Good Luck!