How to remove all authors of a site alphabetically

Hi.

I tried to install the com_alphacontent_v4.0.18 component but I receive an error of JInstaller: :
Install: Error of SQL the Error of a database with number 1064
I don't understand in what a mistake.
The mistake turns out because of incompatibility of the Joomla 2.5.9 version or the SQL base is spoiled ?
Someone from colleagues already faced such problem?

Alex

Hi
The installer issues this message in attempt to deliver a component:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'TYPE=MyISAM' at line 11 SQL=CREATE TABLE IF NOT EXISTS `b518i_alpha_rating` ( `ref` int(11) NOT NULL auto_increment, `id` int(11) NOT NULL default '0', `total_votes` int(11) NOT NULL default '0', `total_value` int(11) NOT NULL default '0', `used_ips` longtext NOT NULL default '', `component` varchar(30) NOT NULL default '', `cid` int(11) NOT NULL default '0', `rid` int(11) NOT NULL default '0', PRIMARY KEY (`ref`) ) TYPE=MyISAM;
SQL =
CREATE TABLE IF NOT EXISTS `#__alpha_rating` (
`ref` int(11) NOT NULL auto_increment,
`id` int(11) NOT NULL default '0',
`total_votes` int(11) NOT NULL default '0',
`total_value` int(11) NOT NULL default '0',
`used_ips` longtext NOT NULL default '',
`component` varchar(30) NOT NULL default '',
`cid` int(11) NOT NULL default '0',
`rid` int(11) NOT NULL default '0',
PRIMARY KEY (`ref`)
) TYPE=MyISAM;

Hi.

I corrected an error 1064.
Task on demonstration of authors of a site is -

It is necessary to show authors alphabetically:
- there is a lot of authors
- having clicked in menu point authors, to receive two lines of letters A of B.... I and A B C... Z
- having clicked on a letter A to remove all authors on a letter A
- so for each letter of the alphabet

Probably someone already solved such problem with display of authors of a site.
What expansion needs to be used for such task?

Regards,
Alex