Type `System.Runtime.Serialization.IExtensibleDataObject` doesn't exist

I'm unable to deploy my unity project to my windows 8 phone, i get the error below when I try to.

I am using a WCF service that has a service context generated from the svcutil exe thats included in monodevelop.

I have included System.Security & System.ServiceModel .dll files in a /Assets/Plugins folder.
I am building to .Net 2.0 and not subset.

Buildplatform: windows phone 8, development checkbox ticked.
When i press the "play" button and test locally everything works.

Error:

Error building Player: Exception: Error: type `System.Runtime.Serialization.IExtensibleDataObject` doesn't exist in target framework. It is referenced from Assembly-CSharp.dll at ProjectName.Internal.DataModel.DataCarriers.UserValidation.
Error: type `System.Runtime.Serialization.ExtensionDataObject` doesn't exist in target framework. It is referenced from Assembly-CSharp.dll at ProjectName.Internal.DataModel.DataCarriers.UserValidation.
Error: type `System.Runtime.Serialization.ExtensionDataObject` doesn't exist in target framework. It is referenced from Assembly-CSharp.dll at ProjectName.Internal.DataModel.DataCarriers.UserValidation.​

Thanks for any help!

 

Have you tried the same build targetting Windows 8.1? I'm wondering if a needed reference isn't getting added to the project.

 

You could also possibly take a copy of the interface out of the mono source and put it in your project with compiler directives to only include it for WP8 builds.