warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (file not found).
If you found this problem, it is because the OS is copied from your iPod/iPhone, and it does not have the necessary library.
In order to solve it, you must copy
/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2/Symbols/Developer
/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2/Symbols/usr
And paste these folders under /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148)/Symbols/
.
That's it.
