I had integrated ShareKit 2.0 in my iPhone application. After that I am not able to run it on a device. But there is no error while I run it on the simulator. The following error message shown in the console while running on the device.
dyld: Symbol not found: _NSURLIsExcludedFromBackupKey
Referenced from: /var/mobile/Applications/231C92DC-765F-47AA-BF5A-7A4AEF708C94/MyAppName.app/MyAppName
Expected in: /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
in /var/mobile/Applications/231C92DC-765F-47AA-BF5A-7A4AEF708C94/MyAppName.app/MyAppName