title: XAML UWP Windows Store : error CS0266/warning CS1697 when deploying solution
body: <p>I've some warning/error when trying to "create App Packages" from a XAML UWP project.  </p>
  
  <p>Firstly a warning : </p>
  
  <pre><code>2017\Projects\MyProjectName\MyProjectName\obj\x86\Release\MyPageName.g.cs(1,1,1,194): warning CS1697: Different checksum values given for C:\Users\administrateur\Documents\Visual Studio 2017\Projects\MyProjectName\MyProjectName\MyPageName.xaml
  </code></pre>
  
  <p>It seem there is a problem with space (the second path is beginning after the last space -before "2017"-). I'm on Win 10.</p>
  
  <p>Ive an cast error too : </p>
  
  <pre><code>1&gt;C:\Users\administrateur\Documents\Visual Studio 2017\Projects\MyProjectName\MyProjectName\obj\x86\Release\MyPageName.g.cs(39,36,39,85): error CS0266: Cannot implicitly convert type 'Windows.UI.Xaml.Controls.Button' to 'MyProjectName.MyButtonReturn'. An explicit conversion exists (are you missing a cast?)
  </code></pre>
  
  <p><code>MyButtonReturn</code> is a button coded in a class extending Button, the definition of "MyButtonReturn" is : </p>
  
  <pre><code> public sealed class MyButtonReturn : Button
    {...
  </code></pre>
  
  <p>Any help ? 
  Thanks</p>