Unable to use the duplication buffer

Hello,
here is the message that appears on Photoshop when I use the clone stamp tool:
unable to use the clone stamp because the area to duplicate has not been defined (alt-click to define a source point)
I have tried everything so if there is a method to follow...
thank you...
Configuration: Windows XP Firefox 3.6

10 answers

  1. You need to hold down the alt key and left-click on the part to duplicate to define the area that will then be duplicated to the desired locations.
    4