Thanks Starbird - after a bit of fiddling I got it to work. Some interesting stuff happened.
Launched AH then Alt Tab'ed back to desktop and brought Powerstrip out of the Tray - the collour curve was completely different to how I had set it previously - evidently the curve AH had imposed. Touch a slider button on the Powerstrip controls and my curve jumped back in and the desktop colours returned to the way I set them.
Eventually had to build a colour profile for AH and get it to load on application launch in the Powerstrip options. Now I launch AH, wait 5 secs after the clipboard appears and the PS kicks in, the colours change and of we go.
Sparks