Been playing with Site Survey module and pop over on SSH and run
aircrack-ng <capfile> -J <hccap>
And it seems to run OK. But over on the hashcat rig (3.20 Ubuntu server 16.04.1) fails with a incorrect epol length.
Copying the cap file over the the hashcat rig and using AC (v 1.2 beta 3) there works perfectly.
The Nano's AC version is 1.2 rc2
(my kali box is 1.2 rc3, which also works)