vBulletin Error: comumn not found!

[محروم.كوم]

Yesterday I checked my email and I found this:

Code:
Database error in vBulletin 3.8.4:

Invalid SQL:

SELECT
userfield.** usertextfield.** user.** UNIX_TIMESTAMP(passworddate) AS
passworddate* user.languageid AS saved_languageid*
IF(displaygroupid=0* user.usergroupid* displaygroupid) AS displaygroupid*
language.phrasegroup_global AS phrasegroup_global*
language.phrasegroup_user AS phrasegroup_user*
language.phrasegroup_referrerstats AS phrasegroup_referrerstats*
language.options AS lang_options*
language.languagecode AS lang_code*
language.charset AS lang_charset*
language.locale AS lang_locale*
language.imagesoverride AS lang_imagesoverride*
language.dateoverride AS lang_dateoverride*
language.timeoverride AS lang_timeoverride*
language.registereddateoverride AS lang_registereddateoverride*
language.calformat1override AS lang_calformat1override*
language.calformat2override AS lang_calformat2override*
language.logdateoverride AS lang_logdateoverride*
language.decimalsep AS lang_decimalsep*
language.thousandsep AS lang_thousandsep

FROM forum_user AS user
LEFT JOIN forum_userfield AS userfield ON (user.userid = userfield.userid)
LEFT JOIN forum_usertextfield AS usertextfield ON (usertextfield.userid =
user.userid) LEFT JOIN forum_language AS language ON (language.languageid =

IF(user.languageid = 0* 2* user.languageid))

WHERE user.userid = 4;

MySQL Error : Unknown column 'language.phrasegroup_referrerstats' in 'field
list'
Error Number : 1054
Request Date : Friday* October 30th 2009 @ 0550 PM
Error Date : Friday* October 30th 2009 @ 0550 PM
Script : http://forum. mydomain.com/referrers.php?
Referrer : http://forum.mydomain.com/
IP Address : XXX.XXX.XXX.XXX
Username :
Classname : vB_Database_MySQLi
MySQL Version :
It's a bug? __DEFINE_LIKE_SHARE__