Application give me many errors

Jul 5, 2012 at 10:58 AM

Error    26    The type or namespace name 'FormatterContext' could not be found (are you missing a using directive or an assembly reference?)  in JsonNetFormatter.cs (Application.Common)

Error    30    The type or namespace name 'Filter' could not be found (are you missing a using directive or an assembly reference?)    in CorsPreflightActionSelector.cs    (Application.Common)

Error    23    'System.Text.Encoding' is a 'type' but is used like a 'variable'    in (Application.Common)

 

And others.

 

Marco