11.3 Co-Install No Sound

I have just co-Installed PT11.3 with PT10.3.8, running Mac OS 10.8.5. Using 002 Rack as main interface and Eleven Rack as GTR processor. I know 002 Rack is not supported, but have heard of many people using it successfully. 10.3.8 works as it always has. 11.3 seems to be working except I'm not getting any output. All meters register sound including the Master, but no sound coming out. I/O setup is identical in both 10 & 11. 002 shows up as Playback Engine. Nothing happens when I click on Hardware in PT 11.3 setup menu. Wondering what I'm missing?



iMac 2.93GHz i7

16 GB RAM

OS 10.8.5

002 Rack - Main interface

Eleven Rack - GTR Processor

PT 10.3.8

PT 11.3 Co-Install