the code uses a hard wired $config value for the session path that is fixed @ install time..
it isn't changeable after that, unless you edit config.inc.php
so the captcha code was assuming all was honkey dorey and writing to the old path (or at least trying to)..
so i wouldn't call it an operator error..
i'd call it exposing a 'feature' to keep in the back of your mind if you ever need to move
ideally, imho.. captcha.inc.php and ubbthreads.inc.php should be using a forum relative sessions directory, so moving wouldn't be an issue..
admin/fileperms.php is assuming it's relative too, soooo just sayin..
