iPhone iOS 5 SDK in app SMS error - ios5

Question

thanks in advance every time I call to create an in app SMS i get the following error...
Application tried to push a nil view controller on target .
This is the code I have that worked in OS 4 SDK...
MFMailComposeViewController *MailController;
MFMessageComposeViewController *SMScontroller;
NSError *error;
NSString *EmailMessage;
NSString *SubjectMessage;
-(IBAction)sendInAppSMS
{
if([MFMessageComposeViewController canSendText])
{
SMScontroller = [[MFMessageComposeViewController alloc] init];
SMScontroller.messageComposeDelegate = self;
NSString *MessageString = #"Hello";
SMScontroller.body = MessageString;
SMScontroller.navigationBar.tintColor = [UIColor blackColor];
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];
[self presentModalViewController:SMScontroller animated:YES];
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];
}
else{
// alertView to tell user to setup a mail account.
NSString *message = [[NSString alloc] initWithFormat:#"To use this feature, you need to have an iPhone with SMS abilities."];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"SMS Account Not Detected" message:message delegate:nil cancelButtonTitle:#"Understood" otherButtonTitles:nil];
[alert show];
}
}
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result
{
switch (result) {
case MessageComposeResultCancelled:
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"I Like It" message:#"User cancelled sending the SMS"
delegate:self cancelButtonTitle:#"OK" otherButtonTitles: nil];
[alert show];
}
break;
case MessageComposeResultFailed:
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"I Like It" message:#"Error occured while sending the SMS"
delegate:self cancelButtonTitle:#"OK" otherButtonTitles: nil];
[alert show];
}
break;
case MessageComposeResultSent:
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"I Like It" message:#"SMS sent successfully..!"
delegate:self cancelButtonTitle:#"OK" otherButtonTitles: nil];
[alert show];
}
break;
default:
break;
}
[self dismissModalViewControllerAnimated:YES];
}

Answer 1

I believe if you are running this in the simulator you'll get the error since it doesn't have sms. I get the same error in simulator but if i connect to my phone it works fine.