Alt-click not working for clone stamp. Frustration ++++
Ridiculous levels of frustration.
Alt-click has stopped selecting area of image when using the clone stamp. Any image, any layer and in images with ony background layer.
I am using a yoga 12 with wacom digitizer, Win 10 x64, i5 with 8gb Ram
Problem occurred previously and a rollback of an apparently unrelated software installation cured it.
Have tried (as per plethora of suggestions):
- reset tool
- reset preferences
- uninstall recent software x3
- reinstall Photoshop CC
- in Clone source box "clipped" is selected but layer title does not appear when trying to select.
- Brush dynamics set to off
- target does appear when alt-clicking but on trying to subsequently clone error message pops up
"Could not use the clone stamp because the area to be cloned could not be defined. (Alt click to define a source point)"

Any other ideas??? All assistance greatly appreciated.
