favorites suddenly not working

[ir803]

Please could someone take a look at my site http://www.ghsimages.co.uk/ and see if they can work out why the favorites link doesn't return back to the image view.
It actually adds images to the favorites but after click it goes to an unavailable error page, I may have changed something without realising, I've replaced some php files with untouched default ones to see if I can repair the fault but nothings worked. I've replaced addfav.php , displayimage.php and thumbnails.php.

[Nibbler]

What do have set as your site URL in config?

[ir803]

well well well. that fixed it. I changed the directory a month or so back but it carried on working, maybe I uploaded a file recently that caused the problem. Thanks very much Nibbler. Now I've got a couple of major problems on the other site I'm working on can I get you to look at that from here or do you want me to re-post

[Nibbler]

One question per thread.

[ir803]

OK cheers,
I won't post another thread as It would be partially repeated in a current one here's the issue http://forum.coppermine-gallery.net/index.php?topic=40089.msg190258#msg190258
Thanks again Nibbler.