Error: This class is not key value coding-compliant for the key keyPath

Question

 UIStoryboard*  sb = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    UIViewController* vc = [sb instantiateViewControllerWithIdentifier:@"SettingsViewController"];
    [[self navigationController] pushViewController:vc animated:YES];

Trying to push a viewcontroller from my NavigationController in Storyboard and I keep getting this error.

* Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<SettingsViewController 0x1f98f100> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key keyPath.' * First throw call stack: (0x31f4a3e7 0x39c3b963 0x31f4a0d5 0x327b87d9 0x327b4543 0x31ed08a5 0x33ef5e69 0x340e5b09 0x71aa3 0x33e1b31d 0x33e9dda9 0x32859657 0x31f1f857 0x31f1f503 0x31f1e177 0x31e9123d 0x31e910c9 0x35a6f33b 0x33dad2b9 0x6567d 0x3a068b20) libc++abi.dylib: terminate called throwing an exception

Answer 1

I got this error becouse I had put something in the "User Defined Runtime Attributes" field in the "Identity inspector" tab. By mystake I left the default keyPath value for the Key Path column and that caused the problem.