I installed and activated plugin then on the settings screen entered the API key and Flickr User ID. When I click 'Save' it returns an error message at bottom of the settings screen :
The Flickr API has returned the following error message.
1: User not found
Then also entered API Secret, generated the authentication token, and authorised access to photostream on Flickr site but the error message remains the same.
My Flickr ID is my Yahoo ID. Any ideas to get around this problem?