title: The specified task executable location ... is invalid
body: <p>I'm new to Xamarin. I'm having a problem with deployment. The project builds successfully but then I get an error message:</p>
  
  <blockquote>
    <p>C:\Program Files
    (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(2,2):
    Error MSB6004: The specified task executable location
    "C:\android\sdk\tools\zipalign.exe" is invalid. (MSB6004) (FirstApp)
    ". " Deployment failed. Packaging failed ".</p>
  </blockquote>
  
  <p>I'm not sure what the problem is or what to do to resolve this. Please help. </p>