Fatal error: Function name must be a string in /home/scott/www/includes/actions.inc on line 100

Well I performed Hack surgery on the problem, and it seems to work, though what function is now not being called I can;t tell. The comment is posted.

***was***

else {
// If it's a configurable action, retrieve stored parameters.
if (is_numeric($action_ids)) {
$action = db_fetch_object(db_query("SELECT * FROM {actions} WHERE aid = '%s'", $action_ids));
$function = $action->callback;
$context = array_merge($context, unserialize($action->parameters));
$result[$action_ids] = $function($object, $context, $a1, $a2);
}

***is now***
else {
// If it's a configurable action, retrieve stored parameters.
if (is_numeric($action_ids)) {
$action = db_fetch_object(db_query("SELECT * FROM {actions} WHERE aid = '%s'", $action_ids));
$function = $action->callback;
if (is_string($function)) {
$context = array_merge($context, unserialize($action->parameters));
$result[$action_ids] = $function($object, $context, $a1, $a2);
}
}

***end****

I have no idea why db_fetch_object is returning the wrong or a bogus object, but it is.