Question

Has anybody encountered this kind of error in MFMessageComposeViewController?

I allocated and presented it like this:

    MFMessageComposeViewController *message = [[MFMessageComposeViewController alloc] init];
    message.messageComposeDelegate = self;

    [[UIApplication sharedApplication].delegate.window.rootViewController presentModalViewController:message animated:YES];

but it presents an empty view and says:

Application tried to push a nil view controller on target <MFMessageComposeViewController: 0x96d1380>.

Answer 1

Possible duplicate of MFMessageComposeViewController on Simulator – canSendText?

Basically this occurs in the simulator on Lion and Mountain Lion if it has a Messages account enabled. Try testing on a real device as it should work okay there.