A question related to popviewcontrolleraminated yes

Question

[self.navigationcontroller popviewcontrolleranimated:YES];

I'm getting bad access for action of back button.

though my view is pushed properly

UIViewCOntroller *viewcontroller = [[UIViewController alloc]initWithNibName:@"Controller"];
[self.navigationcontroller pushviewcontrolleranimated:YES];
[viewcontroller release];