I've just been having another look at Apo and I've solved my own problem - rather than using Export Flame like I used to to get a png image which I could open in my editing program, I used the Render option, but checked the 'Show transparency' box in 'General' under Options, then proceeded to render,saving as a png image. Thought I'd post this in case it's of use to anyone else any time. I'm a happy bunny now:)

Beginners tutorials for Bryce

Bryce Arena