Instaled and I get data base error

I get this error when I enable the arcade in the Products manager

Database error in vBulletin 3.7.4:

Invalid SQL:

SELECT t.champion, u.userid FROM tournaments AS t
LEFT JOIN user AS u ON (t.champion = u.username)
WHERE champion<>'';

MySQL Error : Illegal mix of collations (latin1_spanish_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '='
Error Number : 1267
Request Date : Thursday, December 4th 2008 @ 06:58:48 PM
Error Date : Thursday, December 4th 2008 @ 06:58:48 PM
Script : http://www.desconexioncubana.com/for...ad.php?t=11519
Referrer : http://www.desconexioncubana.com/for...isplay.php?f=2
IP Address :
Username :
Classname : vB_Database
MySQL Version : 5.0.67-community-log


If I disable it, the arcade still works, this is wierd, can you help me with this.

running VB 3.7.4 PL1

cheers

[desconexion]

bumpp

[Gemma]

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