yeah, dang it… looks like a bug… we tried to lock down some security stuff and appears we missed something here…
if you open up file simple-forum/forum/ahah/sf-ahahadmintools.php and replace the following lines at line 31
sf_initialise_globals('forum');
$thistopic = sf_get_topic_record(sf_syscheckint($_GET['id']));
$thisforum = sf_get_forum_record($thistopic->forum_id);
$groups = sf_get_combined_groups_and_forums();
with
$thistopic = sf_get_topic_record(sf_syscheckint($_GET['id']));
sf_initialise_globals('forum', $thistopic->forum_id);
$thisforum = sf_get_forum_record($thistopic->forum_id);
$groups = sf_get_combined_groups_and_forums();
and also, if you find in the same file, lines 67
sf_initialise_globals('topic');
$thispost = sf_syscheckint($_GET['pid']);
$thistopic = sf_get_topic_record(sf_syscheckint($_GET['id']));
$thisforum = sf_get_forum_record($thistopic->forum_id);
$groups = sf_get_combined_groups_and_forums();
and replace with
$thispost = sf_syscheckint($_GET['pid']);
$thistopic = sf_get_topic_record(sf_syscheckint($_GET['id']));
sf_initialise_globals('topic', $thistopic->forum_id);
$thisforum = sf_get_forum_record($thistopic->forum_id);
$groups = sf_get_combined_groups_and_forums();
will get this fixed in the next version… mostly reordering, but also passing a param that was left out…