Installing Drupal

hi there guys and gals,

Can you someone help me with this one thanks.

Notice: Use of undefined constant DRUPAL_ROOT - assumed 'DRUPAL_ROOT' in /home/damtec/public_html/includes/bootstrap.inc on line 2312

Warning: require_once(DRUPAL_ROOT/includes/errors.inc): failed to open stream: No such file or directory in /home/damtec/public_html/includes/bootstrap.inc on line 2312

Hi,
I have moved my drupal 7 installation from hostgator to a debian server (version is the same 7.14). And now I begin to see these warnings. I don't remember seeing any such warnings earlier.

I delete Drupal. Reason I could only create a short cut to the root and sub directories. Drupal is a simple blog http://.blog.mydomain.com. The main site is http://www.mydomain.com. I CAN'T CREATE A SHORTCUT TO MY MAIN SITE LANDING PAGE.

The Drupal developer's for the web application realty thought out this process. I'm off to find me another blog app. Microsoft Web Platform Installer 4.6 has many blog apps to choose from.

Dear,

I'm having some problems after sending the Drupal installation to a Web Server I did the tests on the local machine and functioned perfectly, but when sent to the web server some things do not work. example:

1) The Main Menu does not work reorganization and also he can not do hierarchy, and using the same Drupal version on the local server this feature works.

I'm getting Access Denied. You are not authorized to access this page when I try to log in as user1.

I'm trying to install drupal 8 alpha 11 but I get an error every time. Can someone help me?
Win7
XAMPP 1.8.3
PHP Version 5.5.3

errorlog:

[29-Apr-2014 12:04:45 Europe/Berlin] PHP Fatal error: Call to a member function get() on a non-object in C:\xampp\htdocs\drupal\core\lib\Drupal.php on line 275

[29-Apr-2014 12:04:45 Europe/Berlin] PHP Stack trace: