Unable to go to administration pages (access denied) It seems I have some problems to access some functions. When I try to run my website 
I have these errors:

  warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'nodereference_autocomplete_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_access' not found or invalid function name in D:\SVN\lancaster\Dev\drupal\includes\menu.inc on line 452.
You are not authorized to access this page.


I tried to check if all my modules were enabled, but I can't log in as administrator in my site too. When I do it, I get the following error:


  Forbidden
  You don't have permission to access / on this server.
I recommend you to do the following:


backup your database
truncate drupal cache tables using phpmyadmin ui or from mysql command line
truncate role_permission table using phpmyadmin ui or from the mysql command line
try to login using super administrator, the user with id 1 
if nothing change with you, try to install another drupal project and see if you get the same error messages; maybe you have an issue with your php version or configuration.