title: Build Error: Win32Exception: ApplicationName='cmd', CommandLine='/Cecho "xxx" | openssl base64', CurrentDirectory=''
body: <p>I got this error while building my project to android.</p>
  
  <blockquote>
    <p>Win32Exception: ApplicationName='cmd', CommandLine='/Cecho "xxx" |
    openssl base64', CurrentDirectory=''
    System.Diagnostics.Process.Start_noshell
    (System.Diagnostics.ProcessStartInfo startInfo,
    System.Diagnostics.Process process)
    System.Diagnostics.Process.Start_common
    (System.Diagnostics.ProcessStartInfo startInfo,
    System.Diagnostics.Process process) System.Diagnostics.Process.Start
    () (wrapper remoting-invoke-with-check)
    System.Diagnostics.Process:Start ()
    UnityEditor.FacebookEditor.FacebookAndroidUtil.DoesCommandExist
    (System.String command) (at
    Assets/Facebook/Editor/android/FacebookAndroidUtil.cs:134)
    UnityEditor.FacebookEditor.FacebookAndroidUtil.get_DebugKeyHash () (at
    Assets/Facebook/Editor/android/FacebookAndroidUtil.cs:41)
    UnityEditor.FacebookEditor.FacebookAndroidUtil.IsSetupProperly () (at
    Assets/Facebook/Editor/android/FacebookAndroidUtil.cs:22)
    UnityEditor.FacebookEditor.XCodePostProcess.OnPostProcessBuild
    (BuildTarget target, System.String path) (at
    Assets/Facebook/Editor/FacebookPostprocess.cs:49)
    UnityEditor.HostView:OnGUI()</p>
  </blockquote>
  
  <p>Here are some more detail of my app:</p>
  
  <p>i made a basic 2d game hwo just contain ongui function i have added facebook sdk, google ads sdk, i have installed all the android sdk from sdk manager, i have installed admob plugin vntis. but i havent used facebook sdk. and my pc is 64 bit.</p>