I've created a Portable Class Library, using the nuget packages for JSON.NET and the Async package
when I try and serialize a class within the portable library I get this error, in my unit test project
Could not load file or assembly 'System.Runtime, Version=1.5.11.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
I only seem to get it when there is an public async method on the class. Also if I recreate the class within in the test project then it works fine. The error only occurs when calling into the portable library (to serialize a class with an async method)