said by Techie2000:
I click use and it says it copies okay but nothing happens, or does it have to be approved still?
This might be the result of the request by other users to preserve the date on the avatar.
Since the timestamp of the newly copied file is reset to the original date it was uploaded, the browser does not consider the new avatar to be a replacement so does not download it.
You could try clearing your browser cache completely? does that fix it? the image server does not cache images, if the file on disk changes, it will deliver the new file to a new browser when requested.