Thread:Project:Support desk/'Class LanguageZh cn does not exist'

I'm installing MediaWiki 1.18.2 on an Virtual Machine which running WinXP Pro. When I try to load page localhost/wi/mw-config/index.php, it shows bellow:

Unexpected non-MediaWiki exception encountered, of type "ReflectionException" exception 'ReflectionException' with message 'Class LanguageZh_cn does not exist' in W:\www\wi\includes\Init.php:148 Stack trace:
 * 0 W:\www\wi\includes\Init.php(148): ReflectionClass->__construct('LanguageZh_cn')
 * 1 W:\www\wi\languages\Language.php(188): MWInit::classExists('LanguageZh_cn')
 * 2 W:\www\wi\languages\Language.php(140): Language::newFromCode('zh-cn')
 * 3 W:\www\wi\includes\installer\WebInstaller.php(467): Language::factory('zh-cn')
 * 4 W:\www\wi\includes\installer\WebInstaller.php(139): WebInstaller->setupLanguage
 * 5 W:\www\wi\mw-config\index.php(50): WebInstaller->execute(Array)
 * 6 W:\www\wi\mw-config\index.php(18): wfInstallerMain
 * 1) 7 {main}


 * 0 W:\www\wi\includes\Init.php(148): ReflectionClass->__construct('LanguageZh_cn')
 * 1 W:\www\wi\languages\Language.php(188): MWInit::classExists('LanguageZh_cn')
 * 2 W:\www\wi\languages\Language.php(140): Language::newFromCode('zh-cn')
 * 3 W:\www\wi\includes\installer\WebInstaller.php(467): Language::factory('zh-cn')
 * 4 W:\www\wi\includes\installer\WebInstaller.php(139): WebInstaller->setupLanguage
 * 5 W:\www\wi\mw-config\index.php(50): WebInstaller->execute(Array)
 * 6 W:\www\wi\mw-config\index.php(18): wfInstallerMain
 * 1) 7 {main}

Then I copy the file LanguageZh_hans.php as LanguageZh_cn, and modified it like this: <?php

require_once( dirname( __FILE__ ) . '/../LanguageConverter.php' ); require_once( dirname( __FILE__ ) . '/LanguageZh_hans.php' );

class LanguageZh_cn extends LanguageZh_hans {

} It seems work for now. Could someone tell me if what I'v done is correct? And I wonder why the tar.gz package doesn't contain the file LanguageZh_cn.php? Thank you very much first. I'm not good at English, if my words offends you, please don't mind! : )