[Adrian Schneider]

Templates get compiled when you save into actual PHP code, and evaluated before it gets to global_shutdown.

global_start (or vb4 equivalent)

PHP Code:

echo $vbulletin->templatecache['TEMPLATE_NAME']; exit; 


See what that prints out, and you'll have to do str_replace() on that variable, rather than $output.

PHP Code:

$vbulletin->templatecache['postbit'] = str_replace(
    $find,
    $replace,
    $vbulletin->templatecache['postbit'] 
); 


--------------- Added [DATE]1309828392[/DATE] at [TIME]1309828392[/TIME] ---------------

Alternatively, you could probably do it all in PHP.

Once you've rendered it once, set $post['signature'] = '';