Well come to think of it, it could be a different version than mine so maybe 1843 is right for yours. What's the end of the file look like?
ETA: I'm working on a test site that has version 3.8.3 and the end of mine looks like this:
Code:
($hook = vBulletinHook::fetch_hook('admin_maintenance')) ? eval($hook) : false;
print_cp_footer();
/*======================================================================*\
|| ####################################################################
|| # Downloaded: 15:24, Sat Jul 25th 2009
|| # CVS: $RCSfile$ - $Revision: 29337 $
|| ####################################################################
\*======================================================================*/