My ipad project does not run on a real ipad device

I cannot figure out why it's not working. I run the project on the simulator. It works fine, I test it on the ipad, it does not run. When launch, a black screen appears and it does not even enter the delegate.

Please help开发者_如何学Python.

Thanks

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solved :p it was the path to the files which were wrong and therefore the project could not find them on the device.