To sort this I ran the CAD postinstall.exe at \Prog Files\Cisco\Desktop\bin on every agent PC.
Normally you only have to run this if the PC has multiple NICs (mine just have the 1 built in NIC). It looks like the PCs where imaged with different network settings which still kick around in the registry & when CAD is installed it's bound to these settings instead of the correct network settings of the active & enabled network!
By running this util you force it to bind to the correct network settings.
Maybe this section of the install guide can be updated to read 'If the PC has had multiple networks configured...'.
I'd recommend to always run this tool after CAD setup from now on even if the PC does just have one physical NIC.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...