4.0升级4.10出现错误

Discuz! info: MySQL Query Error

Time: 2006-5-10 1:00pm
Script: /upgrade6.php

SQL: CREATE TABLE cdb_crons (
cronid smallint(6) unsigned NOT NULL auto_increment,
available tinyint(1) NOT NULL default '0',
type enum('user','system') NOT NULL default 'user',
name char(50) NOT NULL default '',
filename char(50) NOT NULL default '',
lastrun int(10) unsigned NOT NULL default '0',
nextrun int(10) unsigned NOT NULL default '0',
weekday tinyint(1) NOT NULL default '0',
day tinyint(2) NOT NULL default '0',
hour tinyint(2) NOT NULL default '0',
minute char(36) NOT NULL default '',
PRIMARY KEY (cronid),
KEY nextrun (available,nextrun)
) ENGINE=MYISAM DEFAULT CHARSET=gbk
Error: Unknown character set: 'gbk'
Errno.: 1115

An error report has been dispatched to our administrator.


如上，谁知道怎么回事帮我一下啊。