wordpress上传以后出现的问题

Warning: require(./wp-blog-header.php) [function.require]: failed to open stream: No such file or directory in D:\www\6230\index.php on line 17Fatal error: require() [function.require]: Failed opening required './wp-blog-header.php' (include_path='.;C:\php5\pear') in D:\www\6230\index.php on line 17
上传到空间以后出现如上的字符，我已经重新上传好几遍了，但是问题还是存在。不知怎么解决？请大家帮忙！