Database error in vBulletin 3.7.3:

Invalid SQL:

					INSERT INTO template
					(styleid, templatetype, title, dateline, username, template)
					VALUES
					(24, 'stylevar', 'outerborderwidth', 1227052544, 'mizraklar', '0');

MySQL Error   : Duplicate entry 'outerborderwidth-24-stylevar' for key 2
Error Number  : 1062
Request Date  : Wednesday, November 19th 2008 @ 01:55:44 AM
Error Date    : Wednesday, November 19th 2008 @ 01:55:44 AM
Script        : http://www.........com/....../css.php?do=update
Referrer      : http://www.......com/...../css.php?s=&do=edit&dowhat=all&group=&dostyleid=24
IP Address    : xx.xxx.xxx.xxx
Username      : filanca
Classname     : vB_Database
MySQL Version : 5.0.58