Which version of photoshop and operating system are you using?
What is not working with the clone stamp tool?
OK. I am a complete idiot. I looked at the brush tool bar and I had it set to color instead of normal. Sorry to have inconvenienced everyone. I had not used that tool in a while so I forgot. I hope, at least that this My help someone else. Thank you so much for your prompt reply. I was imagining all sorts of things.