stalker seemed to stop last night

Greetings all.

my small network of stalker (working off of battery pack) and xbee’s seemed to just stop working overnight. I just received things but wondering if there are any newbie gotchas perhaps?

also I didn’t have the CR2032 installed but do now

I never actually made a change, resetting the stalker or xbee’s never did - just tool all the pieces out, went over the config of each xbee in xctu and verified that the stalker was xmitting over serial (over uartsbee), put it all back together (and popped that CR2032 back in) and things are working

Any ideas?