NSInternalInconsistencyException', reason: 'Could not load NIB in bundle: 'NSBundle
This error can occur when you rename files outside of XCode.To solve it you can just remove the files from your project (Right Click - Delete and "Remove Reference").
Then after you can re-import the files in your project and everything will be OK.
Simply try removing the ".xib" from the nib name in "initWithNibName:".According to the documentation, the ".xib" is assumed and shouldn't be used.
Well, I think the error says that it can't find a nib file named "RootViewController" in your project.
You are writing these lines of code,
self.viewController = [[RootViewController alloc] initWithNibName:@"RootViewController_iPhone.xib" bundle:nil];self.viewController = [[RootViewController alloc] initWithNibName:@"RootViewController_iPad.xib" bundle:nil];At the same time you are asking it to load a nib file named "RootviewController"..!! Where is it..? Do you have a xib file named "Rootviewcontroller"..?