OK i did that (Disabled hooks in config), and then when trying to view a thread i get this:
Fatal error: Call to a member function set_thankscache() on a non-object in /home/**/public_html/forum/includes/functions_forumdisplay.php on line 170
Did everything else that you recommended, and this is what I get when I run diagnostic on most files...
add_site.php File not recognized as part of vBulletin
arcade.php File not recognized as part of vBulletin
casino.php File not recognized as part of vBulletin
cchatbox.php File not recognized as part of vBulletin
chess.php File not recognized as part of vBulletin
delete_site.php File not recognized as part of vBulletin
edit_site.php File not recognized as part of vBulletin
external.php File does not contain expected contents
friends.php File not recognized as part of vBulletin
holdsession.php File not recognized as part of vBulletin
hosting.php File not recognized as part of vBulletin
Bunch of file not recognized
forum.php File version mismatch: found 3.6.8 , expected 3.6.8 Patch Level 2
forumpermission.php File version mismatch: found 3.6.8 , expected 3.6.8 Patch Level 2
global.php File version mismatch: found 3.6.8 , expected 3.6.8 Patch Level 2
help.php File version mismatch: found 3.6.8 , expected 3.6.8 Patch Level 2
image.php File version mismatch: found 3.6.8 , expected 3.6.8 Patch Level 2
index.php File version mismatch: found 3.6.8 , expected 3.6.8 Patch Level 2
& A bunch of those
Other than that, those are the only things displaying when running diagnostics.
Errors still remain