第一次安装phpMyAdmin，在浏览器输入http://localhost/phpMyAdmin/时，出现如下错误
Fatal error: require() [function.require]: Failed opening required './libraries/string_native.lib.php' (include_path='.;C:\php\pear') in D:\Myenv\apache\htdocs\phpMyAdmin\libraries\string.lib.php on line 45
完全不知道怎么办，哪个大神能解答一下
检查下string_native.lib.php这个文件存在么