Install error occured when upgrading from 0.9.6.2 to 0.9.6.3

Hi
I tried to upgrade mysite from 0.9.6.2 to the latest 0.9.6.3 but failed.
I was wondering whether anybody know what’s causing this and how to fix the problem:
Thanks.
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Install results
Setup will now attempt to setup the database:

Creating connection to the database: OK!

Selecting database `db_en2`: OK!

Creating database tables: Database Alerts!

MODx setup couldn’t install/alter some tables inside the selected database.

The following errors had occurred during installation

Column ’description’ cannot be part of FULLTEXT index during the execution of SQL statement ALTER TABLE `modx_site_content` MODIFY COLUMN `pagetitle` varchar(255) NOT NULL default ’’, MODIFY COLUMN `alias` varchar(255) default ’’, MODIFY COLUMN `menutitle` varchar(255) NOT NULL DEFAULT ’’ COMMENT ’Menu title’.

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Can you provide more information about your environment, especially PHP and MySQL version information?

Hi
I am using
PHP 5.2.8
MYSQL 4.1.22
Apache 2.2.8

But I have another website using 0.9.6 in the same server.
And I was able to upgrade to 0.9.6.3 without any problem.