Oops, title should read "Problem removing photos from collections"
Please make sure that the image that you are trying to remove from Collection is selected ( Highlighted ) .
Then select Photo >Remove from Collection .
It should remove the selected image from Collection.
Yes, I was "selecting" the photo by clicking on its border, rather than on the photo itself.
I have several versions of the same photo in a collection. But when I select one or more of the earlier versions to remove from the collection, Lightroom always removes the latest version _ the very one I want to keep! How can I stop that happening?