"Database error in vBulletin 4.1.0 Beta 1"

[AbvAvg]

I was trying to upgrade to latest version of vB. It went smoothly upto 4.0.8
But upgrade script got aborted on 4.1.0 with the following error message.

What do I do?

# Upgrading to 4.1.0 Beta 1
# Step 1 - Creating apiclient table
# Step 2 - Altering session Table (1 of 3)
# Step 3 - Altering session Table (2 of 3)
# Step 4 - Altering session Table (3 of 3)
# Step 5 - Creating apilog table
#

Database error in vBulletin 4.1.0 Beta 1

Invalid SQL: REPLACE INTO setting (varname, grouptitle, value, datatype,default_value)VALUES('socnet', 'user', '', 'integer' ,'63');

MySQL Error : Unknown column 'default_value' in 'field list'
Error Number : 1054
Request Date : Friday, December 31st 2010 @ 05:56:43 PM
Error Date : Friday, December 31st 2010 @ 05:56:43 PM
Script : http://ssrgbs.com/install/upgrade.php
Referrer : http://ssrgbs.com/install/upgrade.php
Classname : vB_Database
MySQL Version : 5.0.91-community