viewing swf test in harmony

I have probably over looked something very obvious but when I do a swf test it says it has successfully exported but the viewer is completely blank!
any help very much appreciated.

The Toon Boom Play.app should be in your Application Folder and should open automatically.
Check your Project’s frames folder. The rendered images should be in there.

Open your Play.app, go to File, Load, then navigate to your rendered images and Load.
Does that work ?