I highly recommend that you re-read that tutorial. If you follow it, you will use Xcode’s Organizer to install your app where you don’t use a .ipa file, but install the app bundle directly. There you can easily look at the console log from the device and see what error’s you’re getting.
This is very likely a case where you have a file name that has a case sensitivity problem. It will work fine in the simulator, but crash on the device leaving you a black screen. You could also have an issue with converting the app to a .ipa file that’s causing problems. You could also have issues in your build.settings.
But the Xcode Organizer’s “Console” link will have messages that indicate what’s going on.
Rob