Errors after moving hosts

After moving hosts, my WP worked fine for about 24hrs. The move was done by “packing” the old installation and database on the old then importing into the new.

Now the following error is thrown on loading https://rocketrider.net:

Warning: require(/home/rocketri/public_html/wp-includes/load.php) [function.require]: failed to open stream: No such file or directory in /home/rocketri/public_html/wp-settings.php on line 21

Fatal error: require() [function.require]: Failed opening required ‘/home/rocketri/public_html/wp-includes/load.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/rocketri/public_html/wp-settings.php on line 21

Any help appreciated.

Bruce