XF 1.1 Error when I visit my forum

[Matthew2D]

I get this error when I visit my forum:

Warning: require(/home/mcwh/public_html/me3board.com/library/XenForo/Autoloader.php) [function.require]: failed to open stream: No such file or directory in/home/mcwh/public_html/me3board.com/index.php on line 6

Fatal error: require() [function.require]: Failed opening required '/home/mcwh/public_html/me3board.com/library/XenForo/Autoloader.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/mcwh/public_html/me3board.com/index.php on line 6

Edit: found the problem