Need help ASAP. Failed the upgrade of Drupal 6.13 to version 14. The failure happened when I tried to re-enable the modules.
Then I requested to restore the backed up site.
These are the messages I get now after restoring:

Warning: require_once(./includes/bootstrap.inc) [function.require-once]: failed to open stream: No such file or directory in /home/content/l/i/p/lipar01t/html/index.php on line 15

Fatal error: require_once() [function.require]: Failed opening required './includes/bootstrap.inc' (include_path='.:/usr/local/php5/lib/php') in /home/content/l/i/p/lipar01t/html/index.php on line 15

http://braindot2.com

I have "fixed" the problem by re-installing the version 6.13. But what do I do to upgrade to 6.14?
These are the messages I got when I first re-enabled the modules after upgrade to 6.14.
• warning: array_map() [function.array-map]: Argument #2 should be an array in /home/content/l/i/p/lipar01t/html/modules/system/system.module on line 966.
• warning: array_keys() [function.array-keys]: The first argument should be an array in /home/content/l/i/p/lipar01t/html/includes/theme.inc on line 1771.
• warning: Invalid argument supplied for foreach() in /home/content/l/i/p/lipar01t/html/includes/theme.inc on line 1771.

A general comment. The upgrade process needs to be more user friendly and less prone to fatal crashes. I found Drupal to be very powerful, but also high maintenance. In less than a year I've gone through almost monthly upgrades that take time and effort and a lot of guesswork to do right. The upgrade instructions are insufficient.