If I package the game in Shipping mode and launch in iOS, I get this warning:
Error: CDO Constructor (CineCameraComponent): Failed to find /Engine/Content/EngineDebugMaterials/M_SimpleTranslucent.M_SimpleTranslucent
If I tap OK, app continues to run without any problem.
But since it is a shipping build, it should not look for EngineDebugMaterials, right?