"OK all is working now :) If I re-read the thread from the beginning, I would have noticed one nice little detail that Steve Cain put in an earlier post:
"1) this works with 2.4r727... not the earlier releases"
"I've been at this for 2 days now with no luck. 3DR Iris+, Arducopter 3.2, MinimOSD Extra 2.2, EzUHF 1.5.
Using APM with Arduplane this configuration works, no problems. On Pixhawk/Iris+ and Arducopter, all data for osd is coming through except…"