4.10 project crashes after updating to 4.12

Hello, We’re having a problem playing our vehicle project after we updated Unreal Engine 4.10 to 4.12.3. Each time we click on button play, Unreal Engine crashes. We updated Unreal Engine because in older versions we couldn’t play our project with Oculus Rift DK2. We tried creating a vehicle template project in 4.10 and then playing it in 4.12 with Oculus and it works, but our project still seems to be a problem. Does anyone have an idea why does it crash and how we could fix it? Thank you all in advance :slight_smile: