Photoshop CS 6, 13.0.6.
Lightroom 6 version 5.0
Camera raw 8.1
On an iMac, OS 10.8.5
Working in LR, I select several images.
Photoshop is already open.
I'm trying to merge the images.
I've used the pull down under Photo edit in..merge to panorama in photoshop
hundreds of times!
Now suddenly, with nothing different that I can tell,it doesn't work.
Nothing happens.
Sometimes the photoshop window comes up but usually nothing.
What's wrong?