I also discovered that the url in the web browser and the one actually assigned in my personal album are not the same.
In the web browser's url address:
Below the picture in my personal album, i found: http://www.hammockforums.net/forum/picture.php?albumid=1158&pictureid=8412
I had been pasting the former, which was not working. Pasting the latter instead seems to work just fine.
Thanks for your help.