This website has been configured to disallow editing with SharePoint Designer 2010

For site collection administrators on the web application

This disables SharePoint Designer for site collection administrators and as a result, all users, of the web application and its site collections.

1. Log on to Central Administration.
   Note For more information on accessing Central Administration, see Central Administration Help.
2. In the left navigation, click General Application Settings.
3. On the General Application Settings page, click Configure SharePoint Designer settings.
4. To change the web application where you want to apply your settings, click the currently selected application and choose Change Web Application. Then on the Select Web Application screen, click the application you want to use.
5. On the SharePoint Designer Settings page, uncheck the box Enable SharePoint Designer.
6. Click OK.