title: Xamarin forms AppIcon.xcassets causing error on upload.
body: <p>I'm getting the following errors when uploading my app to TestFlight. </p>
  
  <p><a href="https://i.stack.imgur.com/SMYAu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SMYAu.png" alt="Xcode Errors"></a></p>
  
  <p>However, I don't see any place for the <code>missing</code> icons in the Xamarin assets menu. (76x76, 167x167, and 152x152)</p>
  
  <p><a href="https://i.stack.imgur.com/8Ijhe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8Ijhe.png" alt="Xamarin Forms Asset.xcassets"></a></p>
  
  <p>I thought I could work around it by editing the <strong>Contents.json</strong> file in Sublime, but it appears that the 76x76 icon is accounted for in the file... so I don't think it would work. I have everything up-to-date (Visual Studio, Xcode, etc). </p>
  
  <pre><code>{
    "images": [
  {
    "size": "20x20",
    "scale": "2x",
    "idiom": "iphone"
  },
  {
    "filename": "apple-touch-icon-60x60.png",
    "size": "20x20",
    "scale": "3x",
    "idiom": "iphone"
  },
  {
    "size": "29x29",
    "scale": "2x",
    "idiom": "iphone"
  },
  {
    "size": "29x29",
    "scale": "3x",
    "idiom": "iphone"
  },
  {
    "size": "40x40",
    "scale": "2x",
    "idiom": "iphone"
  },
  {
    "filename": "apple-touch-icon-120x120.png",
    "size": "40x40",
    "scale": "3x",
    "idiom": "iphone"
  },
  {
    "filename": "Divco120.png",
    "size": "60x60",
    "scale": "2x",
    "idiom": "iphone"
  },
  {
    "filename": "apple-touch-icon-180x180.png",
    "size": "60x60",
    "scale": "3x",
    "idiom": "iphone"
  },
  {
    "filename": "Divco20.png",
    "size": "20x20",
    "scale": "1x",
    "idiom": "ipad"
  },
  {
    "filename": "Divco40.png",
    "size": "20x20",
    "scale": "2x",
    "idiom": "ipad"
  },
  {
    "size": "29x29",
    "scale": "1x",
    "idiom": "ipad"
  },
  {
    "size": "29x29",
    "scale": "2x",
    "idiom": "ipad"
  },
  {
    "filename": "Divco40.png",
    "size": "40x40",
    "scale": "1x",
    "idiom": "ipad"
  },
  {
    "size": "40x40",
    "scale": "2x",
    "idiom": "ipad"
  },
  {
    "filename": "Divco167.png",
    "size": "83.5x83.5",
    "scale": "2x",
    "idiom": "ipad"
  },
  {
    "filename": "apple-touch-icon-76x76.png",
    "size": "76x76",
    "scale": "1x",
    "idiom": "ipad"
  },
  {
    "filename": "apple-touch-icon-152x152.png",
    "size": "76x76",
    "scale": "2x",
    "idiom": "ipad"
  },
  {
    "filename": "Divco1024.png",
    "size": "1024x1024",
    "scale": "1x",
    "idiom": "ios-marketing"
  },
  {
    "size": "60x60",
    "scale": "2x",
    "idiom": "car"
  },
  {
    "size": "60x60",
    "scale": "3x",
    "idiom": "car"
  },
  {
    "role": "notificationCenter",
    "size": "24x24",
    "subtype": "38mm",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "role": "notificationCenter",
    "size": "27.5x27.5",
    "subtype": "42mm",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "role": "companionSettings",
    "size": "29x29",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "role": "companionSettings",
    "size": "29x29",
    "scale": "3x",
    "idiom": "watch"
  },
  {
    "role": "appLauncher",
    "size": "40x40",
    "subtype": "38mm",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "role": "appLauncher",
    "size": "44x44",
    "subtype": "40mm",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "role": "appLauncher",
    "size": "50x50",
    "subtype": "44mm",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "role": "quickLook",
    "size": "86x86",
    "subtype": "38mm",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "role": "quickLook",
    "size": "98x98",
    "subtype": "42mm",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "role": "quickLook",
    "size": "108x108",
    "subtype": "44mm",
    "scale": "2x",
    "idiom": "watch"
  },
  {
    "size": "1024x1024",
    "scale": "1x",
    "idiom": "watch-marketing"
  },
  {
    "size": "16x16",
    "scale": "1x",
    "idiom": "mac"
  },
  {
    "size": "16x16",
    "scale": "2x",
    "idiom": "mac"
  },
  {
    "size": "32x32",
    "scale": "1x",
    "idiom": "mac"
  },
  {
    "size": "32x32",
    "scale": "2x",
    "idiom": "mac"
  },
  {
    "size": "128x128",
    "scale": "1x",
    "idiom": "mac"
  },
  {
    "size": "128x128",
    "scale": "2x",
    "idiom": "mac"
  },
  {
    "size": "256x256",
    "scale": "1x",
    "idiom": "mac"
  },
  {
    "size": "256x256",
    "scale": "2x",
    "idiom": "mac"
  },
  {
    "size": "512x512",
    "scale": "1x",
    "idiom": "mac"
  },
  {
    "size": "512x512",
    "scale": "2x",
    "idiom": "mac"
  }
  ],
  "info": {
     "version": 1,
     "author": "xcode"
  }
  }
  </code></pre>