As I mentioned previously I am using an NSImageView for output
(like Examples/Quartz Composer/Interface Builder Comp./Video
Mixer). The UI controls are binding correctly. The NSImageView is
bound to controller.patch.Output. Composer shows an image appearing
for that port but nothing appears in the NSImageView. What steps am
I missing?
You need to bind to the value on the output port of the composition:
"controller.patch.Output.value"