Warning: main(cake/bootstrap.php) [function.main]: failed to open stream: No such file or directory in /home/caravana/public_html/app/webroot/index.php on line 77

Warning: main() [function.include]: Failed opening 'cake/bootstrap.php' for inclusion (include_path='/home/caravana/public_html:/home/caravana/public_html/app/:/usr/lib/php:.:/usr/php4/lib/php:/usr/local/php4/lib/php') in /home/caravana/public_html/app/webroot/index.php on line 77

Fatal error: Can't find CakePHP core. Check the value of CAKE_CORE_INCLUDE_PATH in app/webroot/index.php. It should point to the directory containing your /cake core directory and your /vendors root directory. in /home/caravana/public_html/app/webroot/index.php on line 78