Fatal errors on new install?

Warning: require(/home/x/public_html/wp-includes/default-filters.php) [function.require]: failed to open stream: No such file or directory in /home/x/public_html/wp-settings.php on line 82

Fatal error: require() [function.require]: Failed opening required ‘/home/x/public_html/wp-includes/default-filters.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/x/public_html/wp-settings.php on line 82

This is line 82:
$GLOBALS[‘table_prefix’] = $table_prefix;

Never seen anything like this before.