title: Updating Xamarin.Forms to 2.5... conflicting with other packages
body: <p>I am using Xamarin Forms with visual studio 2017 .. the new project is always has Xamarin.Forms v 2.3.3.191.
  The project doesn't work .. it stops on (InitializeComponent) on the MainPage .. just stops and nothing happening.
  I thought the problem is with Xamarin.Forms version, so I installed the update of Xamarin.Forms .. the version 2.5.0.121934 (Last Stable)
  Then when I rebulid the <strong>Android</strong> project it gives me that error</p>
  
  <blockquote>
    <p>Severity Code Description Project File Line Suppression State Error
    Exception while loading assemblies: System.IO.FileNotFoundException:
    Could not load assembly 'Xamarin.Android.Support.Fragment,
    Version=1.0.0.0, Culture=neutral, PublicKeyToken='. Perhaps it doesn't
    exist in the Mono for Android profile? File name:
    'Xamarin.Android.Support.Fragment.dll'</p>
  </blockquote>
  
  <p>And these are the packages</p>
  
  <pre><code>&lt;package id="Xamarin.Android.Support.Animated.Vector.Drawable" version="23.3.0" targetFramework="monoandroid60" /&gt;
    &lt;package id="Xamarin.Android.Support.Design" version="23.3.0" targetFramework="monoandroid60" /&gt;
    &lt;package id="Xamarin.Android.Support.v4" version="23.3.0" targetFramework="monoandroid60" /&gt;
    &lt;package id="Xamarin.Android.Support.v7.AppCompat" version="23.3.0" targetFramework="monoandroid60" /&gt;
    &lt;package id="Xamarin.Android.Support.v7.CardView" version="23.3.0" targetFramework="monoandroid60" /&gt;
    &lt;package id="Xamarin.Android.Support.v7.MediaRouter" version="23.3.0" targetFramework="monoandroid60" /&gt;
    &lt;package id="Xamarin.Android.Support.v7.RecyclerView" version="23.3.0" targetFramework="monoandroid60" /&gt;
    &lt;package id="Xamarin.Android.Support.Vector.Drawable" version="23.3.0" targetFramework="monoandroid60" /&gt;
    &lt;package id="Xamarin.Forms" version="2.5.0.121934" targetFramework="monoandroid60" /&gt;
  </code></pre>
  
  <p>I tried to update Xamarin.Android.Support.v7.AppCompat but it gives me an error</p>
  
  <blockquote>
    <p>Severity Code Description Project File Line Suppression State Error
    Unable to resolve dependencies. 'Xamarin.Android.Support.v7.AppCompat
    26.1.0.1' is not compatible with 'Xamarin.Forms 2.5.0.122203 constraint: Xamarin.Andr</p>
  </blockquote>
  
  <p>Now I have two cases:</p>
  
  <ol>
  <li>Updating X.F to version 2.5.... and that throws an error System.IO.FileNotFoundException: Could not load assembly 'Xamarin.Android.Support.Fragment at rebuilding android project]</li>
  <li>Keep the X.F version at 2.4.... and that make the app crushes at some points</li>
  </ol>
  
  <p>I am working with Android 6 Marshmallow API 23 </p>
  
  <p>PLEASE HELP ME</p>