[BirdOPrey5]

I didn't check whether the code is good or not, just that what you wrote the first time was definitely invalid.

This is what I use personally to disable for users with IE 9... (on the global_start hook)

if (ieversion() < 9.0)
{
  $is_livetopic = true;
  $livetopichook = 'template_edits';
  include 'includes/livetopic_hooks.php';
}

And it works for everyone else. If you want it only for mods and admins I would suggest:

global $vbulletin;
if (is_member_of($vbulletin->userinfo, 5, 6, 7))
{
  $is_livetopic = true;
  $livetopichook = 'template_edits';
  include 'includes/livetopic_hooks.php';
}

(you don't need an array.)

If it still breaks for other users then I don't know, check and make sure no other code was changed.