pdf and comments error

Hi,I have two problems:

1) If you enable the display of content as PDF I get an error in the database, namely:

Quote: Database error in vBulletin 3.8.4: Invalid SQL: SELECT moderator.*, user.username, IF(user.displaygroupid = 0, user.usergroupid, user.displaygroupid) AS displaygroupid, infractiongroupid FROM moderator AS moderator INNER JOIN user AS user USING(userid) WHERE moderator.userid = 1; MySQL Error : Error Number : Request Date : Thursday, November 12th 2009 @ 09:25:15 AM Error Date : Thursday, November 12th 2009 @ 09:25:15 AM Script : http://www.vesparesources.com/index....df&contentid=1 Referrer : IP Address : 88.44.74.209 Username : horusbird Classname : vb_database MySQL Version :

2) does not display the comments and I can not edit them because they are not seen.
I can only add comments that are regularly included in the database but not displayed in the queue all'atricolo.

How to solve?
Thanks
Marco

MySQL Error : <== i don't can see the error? What is the error exactly?

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