Code 4: NSCocoa domain error

[admin]

I have an app working fine with the UIImagePicker...but then i added this code:

- (void)imagePickerControllerUIImagePickerControll er *)picker didFinishPickingMediaWithInfoNSDictionary*)info{
imageView.image = [info objectForKey:@"UIImagePickerControllerOriginalImag e"];
[[picker parentViewController] dismissModalViewControllerAnimated:YES];

}

The error is:
File Removal Failed:ErrorDomain=NSCococaErrorDomain Code 4.

The app doesnt crash, but the resulting photo is not presented properly as selected. The picture is selected from the camera roll and it doesnt scroll much.