title: System.IO.FileNotFoundException: Could not load assembly...perhaps doesn't exist in the Mono for Android Profile?
body: <p>I am getting the following error when trying to compile my Android App from Visual Studio (I am using Xamarin plug in).</p>
  <blockquote>
  <p>Error 2   Exception while loading assemblies: System.IO.FileNotFoundException: Could not load assembly 'PresentationUI, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Perhaps it doesn't exist in the Mono for Android profile?</p>
  <p>File name: 'PresentationUI.dll'    at
  Xamarin.Android.Tuner.DirectoryAssemblyResolver.Resolve(AssemblyNameReference</p>
  <p>reference, ReaderParameters parameters)    at
  Xamarin.Android.Tasks.ResolveAssemblies.AddAssemblyReferences(List`1</p>
  <p>assemblies, AssemblyDefinition assembly, Boolean topLevel)    at
  Xamarin.Android.Tasks.ResolveAssemblies.AddAssemblyReferences(List`1</p>
  <p>assemblies, AssemblyDefinition assembly, Boolean topLevel)    at
  Xamarin.Android.Tasks.ResolveAssemblies.Execute()</p>
  </blockquote>
  <p>I had a look around and found this <a href="http://forums.xamarin.com/discussion/11451/android-system-io-compression-dll-not-available-on-windows" rel="noreferrer">forum post</a> which looks like a similar problem. I couldn't find the PresentationUI.dll assembly tho.</p>
  <p>Any suggestion on why am I getting this error and how to fix it?</p>
  <p><strong>Update</strong></p>
  <p>I found that the problem actually comes from using DelegateCommand from Microsoft.Practices.Prism.dll
  Is it because this assembly is not supported by Xamarin?</p>
  <p>Cheers,</p>