Can't import Newtonsoft.Json.dll

I downloaded Newtonsoft.Json.dll from http://components.xamarin.com/view/json.net/ and added it into my project but error occurs. The sample solution in the zip file even creates the same error..

C:\Program Files\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(5,5): Error XA9005: User code size, 349696 bytes, is larger than 65536 and requires a혻Indie혻(or higher) License. (XA9005) (Json.NET.Android.Sample) C:\Program Files\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(5,5): Error XA9006: Using type System.Reflection.Assembly requires혻Indie혻(or higher) License. (XA9006) (Json.NET.Android.Sample)

What is wrong with my Xamarin Studio?