مشكل اثناؤء الترقيه الى الرابعه MySQL Error : Illegal mix of collations (latin1_swedish_ci,IMPLIC IT) and (latin1_gener

السلام عليكم

Database error in vBulletin 3.7.3:

Invalid SQL:

SELECT prefix.*, prefixpermission.usergrou pid AS restriction
FROM prefix AS prefix
LEFT JOIN prefixpermission AS prefixpermission ON (prefix.prefixid = prefixpermission.prefixid )
ORDER BY prefix.displayorder;

MySQL Error : Illegal mix of collations (latin1_swedish_ci,IMPLIC IT) and (latin1_general_ci,IMPLIC IT) for operation '='
Error Number : 1267
Request Date : Monday, January 18th 2010 @ 06:48:59 AM
Error Date : Monday, January 18th 2010 @ 06:48:59 AM
Script : http://www._____.com/vb4/install/upg...0a2.php?step=5
Referrer :
IP Address :
Username :
Classname : vB_Database
MySQL Version : 5.0.87-community

مع اتع عملت شرح وضع latin1_swedish_ci في الجداول المحدده
لاكن نفس المشكله