Unity Player Settings for Vuforia projects can be a source of problems if incompatible platform settings are selected. The Player Settings layouts changed a bit between Unity 4.6.x and Unity 5.x. Here's some comparison screenshots of the Vuforia-compatible Unity Player Settings for iOS and Android in Unity 4.6.x and Unity 5.x to verify your project settings against.
Key Settings for Vuforia Unity Projects:
- Make sure OpenGL ES 2.0 is explicity selected. Turn off Automatic for Graphics API. Vuforia doesn't support iOS Metal or OpenGL ES 3.0.
- On Android, make sure to use ARMv7. A device may have an Intel chip, but Vuforia needs to be compiled with ARMv7 and the device can attempt to use ARM emulation to run it.
- If you're using "Stripping Level" and experiencing crashes, then set it to "Disabled".
- For iOS, use IL2CPP for the Scripting Backend. Mono (2.x) is 32-bit only.
- Use "Forward" for the Rendering Path.
And be sure to read the Unity documentation on iOS and Android Player Settings.
| Attachment | Size |
|---|---|
 unity_player_settings_ios.png | 146.44 KB |
| unity_player_settings_android.png | 137.31 KB |
iOS 10 has introduced a new requirement to have a string value description assigned to NSCameraUsageDescription specified in the Info.plist of the Xcode project.
Unity 5.4.1p1 added field for this in the iOS Player Settings. From their release notes:
https://unity3d.com/unity/qa/patch-releases
Unity 5.4.1p1 iOS Player Settings:
Additional compatibility explanation on Unity Forums:
http://forum.unity3d.com/threads/ios-10-0-and-xcode-8-compatibility.430103/