I have a universal app built that runs and works perfectly on an iPad, iPhone 4G, 3GS & 3G, but when run on an iPod Touch 4G it won\'t run properly.
I don\'t hav
I am not sure it will work, but it may help you.
Make sure that, in the InterfaceBuilder, the attribute(visibleAtLaunch) in main window is checked.
Some times if it doesn't checked then it will show black screen.