Well... its a simple SQL UPDATE statement to a core Coppermine table... I wouldn't expect you to be able to do any admin tasks if that weren't allowed.
Do you have debug mode on? See http://documentation.coppermine-gallery.net/en/errors.htm#errors_debu...
Do you have debug mode on? See http://documentation.coppermine-gallery.net/en/errors.htm#errors_debu...