Portable Libraries and the Windows App Certification Kit RC [Nick]
Visual Studio 2012 includes built-in support for Portable Class Libraries that can be used to share code between .NET applications targeting multiple platforms, for example, between Windows Phone and Windows 8 Metro style apps.
We’ve received reports that the Windows App Certification Kit (ACK) currently fails to load some portable libraries with an error in the debug configuration test step similar to:
Error Found: The debug configuration test detected the following errors: Failed to process the binary PortableClassLibrary1.dll.
This is a bug in the RC version of the tools, and will be fixed to enable full support for Portable Class Libraries for Windows 8 RTM.