Error upgrading from 2.6.3 to 2.7

http://tapc.ca

This is why I hate upgrading.

I tried to upgrade from 2.6.3 and this is what I get.

Warning: require…../public_html/tapc.ca/wp-includes/compat.php) [function.require]: failed to open stream: No such file or directory in /home/cecon46/public_html/tapc.ca/wp-settings.php on line 238

Fatal error: require() [function.require]: Failed opening required …../public_html/tapc.ca/wp-includes/compat.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /…../public_html/tapc.ca/wp-settings.php on line 238