Official response:
Unfortunately for now you can only use Divine under Windows.
But the good news is that we are going to release Mac version of Divine.
Hint from our user (Thanks, Niero!):
"...the only way to run things efficiently at the moment is to get a trial version of Photoshop for Windows and run it (preferably on two screens) via Parallels or VMware drag and dropping from one end to the other. Far from efficient, but gets the job done far quicker than going in manually."