Custom Template Hook

[kh99]

It may be that forumdisplay_start is too late, because the header can be rendered before that. You could try to set $template_hook['above_header'] to some string constant just to make sure that it's not a problem with your custom template. If you still don't see anything, try using hook parse_templates (and you'd probably want to enclose it in if (THIS_SCRIPT == 'forumdisplay') so it's not happening on every page).