Thank you guys for your assisting me.
I got it straightened out. i went so far as to load an earlier version with the same
result of nothing happening. All along I had been trying to use the left control key.
(which is how I have always done it) Today I slid over and tried the right side control
key and it worked! Don't know why but something had triggered the left control key not to work with paint, as this control key worked for everything else.Once the clone tool responded to the right control key..no problem
works fine now on the left key...So strange!...a hic up of some kind...