My clone stamp is not cloning
I am running CS5 on a Mac. I select my clone source, and CS5 shows it in the brush circle as I move it to the destination. Then I click on my track pad (or on my Wacom tablet, the result is the same), and nothing happens - the sample in the brush circle is not copied to the destination.
I've gone into the Clone Source tab and unchecked everything, but it makes no difference; I've even tried unplugging the Wacom in case it was interfering somehow, but this has no effect. Opacity is set to 100%. Why is this happening and how can I fix it?
