Chris,
Sorry, can't tell from the model number, but if you look on the pcb itself, it will tell you after the Raspberry Pi2B bit whether it is a version 1.1 or version 1.2 board. Newer Pi2Bs from non-PilotAware sources seem to be version 1.2 boards, which use a different architecture and won't run PilotAware as it currently exists.
Lee has done a considerable amount of work rewriting the software to deal with this, but as he indicated above this software version has not been released yet, though I would expect this to happen fairly soon.
Regards
Peter