Erro em post ao atualizar

Database error in vBulletin 4.0.3:
Invalid SQL:
   (SELECT 'package' AS classtype, package.packageid AS typeid, package.packageid AS packageid,
    package.productid AS productid, if(package.productid = 'vbulletin', 1, product.active) AS enabled,
    package.class AS class, -1 as isaggregator
   FROM package AS package
   LEFT JOIN product AS product
     ON product.productid = package.productid
   WHERE product.active = 1
    OR package.productid = 'vbulletin'
   )
   UNION
   (SELECT 'contenttype' AS classtype, contenttypeid AS typeid, contenttype.packageid AS packageid,
    1, 1, contenttype.class AS class  ,  contenttype.isaggregator
   FROM contenttype AS contenttype
   INNER JOIN package AS package ON package.packageid = contenttype.packageid
   LEFT JOIN product AS product ON product.productid = package.productid
   WHERE product.active = 1
   OR package.productid = 'vbulletin'  );
MySQL Error   : Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (latin1_general_ci,IMPLICIT) for operation '='
Error Number  : 1267
Request Date  : Wednesday, April 28th 2010 @ 12:13:51 AM
Error Date    : Wednesday, April 28th 2010 @ 12:13:51 AM
Script        : http://www.futbolapuesta.es/showthread.php?14683-michael-jackson-en-la-semana-santa&p=67639
Referrer      : http://www.futbolapuesta.es/
IP Address    : 
Username      : 
Classname     : vB_Database
MySQL Version : 5.1.45