After an istallation of DNN 722 version (but also 732) the application run fine on localhost with IIS 8.5 (windows 8).

But if I run the debug of the application with Visual web developer expres 2010 the debug stop itself on the row 273 on default.aspx.cs file. The line is:

if (PortalSettings.ActiveTab.PageHeadText != Null.NullString && !Globals.IsAdminControl())

The error message is: System.NullReferenceException {"Object reference not set to an instance of an object."}

Is it possible fix this issue?