I've been playing with XCode and using wincp to copy my app to the iphone followed by ldid and quickload to test my app. I recently upgraded my xcode to firmware 2.2.1 and now my app shuts down immediately when I run it on my phone. There aren't any crash logs produced, it just seems to open then shutdown immediately. I even downloaded a sample app from the apple website and followed my same approach to getting it on the phone and got the same result.

Just wondering if anyone has encountered this issue. One thing I did notice is that when I upgraded my version of Xcode it required me to use a cert to build the app. I didn't need to do this before, I would just leave the signature blank and build in release.

Try installing one free app from iTunes store and then test again. Btw if it works you can safely delete the free app.

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Game remake