I've started building a project and noticed that whenever I switch between landscape and portrait on any of my iDevices, the screen more often than not turns pitch black.
I've tested this on an iPad 2, iPhone 4S and iPhone 3GS, and in all cases rotating the screen causes the screen to go black.
Is this a well-known error? Is there something I can do to keep this from happening?
Also, as a side note, is there any way to prevent the game from going portrait in the first place?