Tengo la siguiente configuración y todavía no puedo agregar bibliotecas mvmcross a mi proyecto:

VS2013 Actualización 3Nuget Package Manager 2.8.50313.46PCL Profile 158 (también probé otros como 78, etc.)

El registro de instalación está abajo:

Attempting to resolve dependency 'MvvmCross.HotTuna.StarterPack (≥ 3.2.1)'.
Attempting to resolve dependency 'MvvmCross.HotTuna.MvvmCrossLibraries (≥ 3.2.1)'.
Attempting to resolve dependency 'MvvmCross.HotTuna.CrossCore (≥ 3.2.1)'.
Attempting to resolve dependency 'MvvmCross.PortableSupport (≥ 3.2.1)'.
Installing 'MvvmCross.PortableSupport 3.2.1'.
Successfully installed 'MvvmCross.PortableSupport 3.2.1'.
Installing 'MvvmCross.HotTuna.CrossCore 3.2.1'.
Successfully installed 'MvvmCross.HotTuna.CrossCore 3.2.1'.
Installing 'MvvmCross.HotTuna.MvvmCrossLibraries 3.2.1'.
Successfully installed 'MvvmCross.HotTuna.MvvmCrossLibraries 3.2.1'.
Installing 'MvvmCross.HotTuna.StarterPack 3.2.1'.
Successfully installed 'MvvmCross.HotTuna.StarterPack 3.2.1'.
Installing 'MvvmCross 3.2.1'.
Successfully installed 'MvvmCross 3.2.1'.
Adding 'MvvmCross.PortableSupport 3.2.1' to ClassLibrary1.
Uninstalling 'MvvmCross.PortableSupport 3.2.1'.
Successfully uninstalled 'MvvmCross.PortableSupport 3.2.1'.
Install failed. Rolling back...
Could not install package 'MvvmCross.PortableSupport 3.2.1'. You are trying to install this package into a project that targets 'portable-net45+win+wp80+Xamarin.iOS10+MonoAndroid10+MonoTouch10', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.