Clone Stamp Tool has Strange Behavior

[Jack]

Normally when using the clone stamp tool, after I select a source region on my image and begin to drag toward the target region, the source is painted into the target. However, on this startup of Photoshop, when I hold down the left mouse button, a white disc appears within my brush, and no 'painting' takes place. I have tried (a) resetting Photoshop tool settings, and (b) shutting down and restarting my iMacS High Sierra 10.13.2. Nothing helps.

any ideas appreciated as always,

jwc

[Barbara Ash]

I second what Dave said about remote access. And I would add to that to be careful even about giving Adobe remote access. If you happen to contact Adobe phone support, not all of the support people are knowledgable and I know of instances where they have wrecked havoc with customer computers using remote access. Remote access should be a last resort, and even then I'd advise making a backup of your computer before doing so.

[davidh22200356]

I had this problem today and was losing my mind.  I went through each solution, none of them worked.  I created a new image and found the clone tool worked.  I then compared the two images and noticed that the image where the clone tool didn't work was "locked" and was named Background double clicking on the padlock requested a name for a new layer (Layer 0) and once I had done that, the clone tool worked as expected, no more white disc...