Error since upgrade to 3.6.2

[Eq4bits]

naw, is most likely a plug-in, perhaps a mod i had installed that the new version of vB had already?
I'll try taking it out manually and hope it doesn't frell things up

Thanks Paul if you've got a chance I think I have it run down to the thread prefix mod
my current subscription.php:

$previewfield thread.threadid, IF(thread.threadprefix <> '', CONCAT('" . $vbulletin->options['prefixmarkup_start'] . "', thread.threadprefix, '" . $vbulletin->options['prefixmarkup_end'] . "', thread.title), thread.title) AS title AS threadtitle, forumid, pollid, open, replycount, postusername,
				$lastpost_info, postuserid, thread.dateline, views, thread.iconid AS threadiconid, notes, thread.visible, thread.attach
				" . ($vbulletin->options['threadmarking'] ? ", threadread.readtime AS threadread" : '') . "
				$hook_query_fields

and this is from the 'clean' vb3.6.2 subscription.php without the mods

$previewfield thread.threadid, thread.title AS threadtitle, forumid, pollid, open, replycount, postusername,
				$lastpost_info, postuserid, thread.dateline, views, thread.iconid AS threadiconid, notes, thread.visible, thread.attach
				" . ($vbulletin->options['threadmarking'] ? ", threadread.readtime AS threadread" : '') . "
				$hook_query_fields

so now my question is will just 'fixing' (and how do i do that?) the subscription .php file do the trick? Or do I have to get rid of the mod?