OK, ran v1.2 with GPU and it worked.  It picked up my GTX770 but there was no real benefit.  I was only getting an extra 40-50H/S more and my system was less stable.  When I'm getting around 1000H/S from the CPU it made more sense to go back to v1.3 and just use the CPU.

I have seen people reporting speeds of 600MH/s from a GPU (https://bitcointalk.org/index.php?topic=1778118.0) so was a little surprised to only get about 50H/S.