Database Error

[Murty]

Hey guys,
I know this probably isnt the right place to be asking about modification problems, but really need some help. If you can't help me, then fair enough, i will have to look else where.
Anyways.

I was updating a modification and it overwrote some tables in the database and when i clicked 'Next' it came up with this error:

Database error in vBulletin 3.6.5:

Invalid SQL:

SELECT
userfield.*, usertextfield.*, user.*, UNIX_TIMESTAMP(passworddate) AS passworddate,
IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid,
language.phrasegroup_holiday AS phrasegroup_holiday,
language.phrasegroup_global AS phrasegroup_global,
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 user AS user
LEFT JOIN userfield AS userfield ON (user.userid = userfield.userid)
LEFT JOIN usertextfield AS usertextfield ON (usertextfield.userid = user.userid) LEFT JOIN language AS language ON (language.languageid = IF(user.languageid = 0, 1, user.languageid))

WHERE user.userid = 1;

MySQL Error : Unknown column 'passworddate' in 'field list'
Error Number : 1054
Date : Wednesday, April 18th 2007 @ 02:44:55 PM
Script : http://www.mysite.com/forums/index.php
Referrer :
IP Address : xxx.xxx.xxx.xxx
Username :
Classname : vB_Database

I have the following versions of mysql and php on my hosting:

MySQL: 4.1.21
PHP: 5.1.6


I also have another forum installed and it is still running fine, so i know that SQL hasnt stopped. I have tried repairing the database and checked it for errors, but it says that it all seems to be ok.

Any help you can give me would be great, thanks.