NSView/NSBox in IB will not instantiate at program start

Question

Here's what I have:
I have a view manager. This view manager is set as the class to an NSObject in IB. I have a view called MyView which is assigned a class called MyViewController in IB. In my MainMenu.xib in the window I have a NSBox that I use for my main view. It is this NSBox that I have linked to the Outlet in the MainViewManager shown below. (I hope the diagram below helps.)
MYView NIB
MYViewController.view ---> MYView
MainMenu NIB
In MainViewController (IB Object)
<<IBOutlet>> MainViewController.mainView ---> NSWindow.NSBox
The problem occurs when in tryToEndCurrentEdits the window is retrieved from the mainView. The mainView is nil and therefore no window is returned. The object below is set up as a NSObject in IB and has its mainView Outlet linked to the NSBox in the window in the MainMenu.xib. When the program starts the NSBox in the window should be instantiated and its reference linked to the mainView Outlet in the MainViewController; correct? The MainViewController is instantiated as it should be through IB and the window displays, but the NSBox does not display.
I have used this technique before but I have never had it do this. I need the NSBox to instantiate so I can place views in it. Could this be a bug in 3.2.2? Has anyone used this before?
Any help on this will be greatly appreciated.
Thanks in advance,
Rob
#import <Cocoa/Cocoa.h>
#import "MYViewController.h"
@interface MainViewManager : NSObject {
NSBox *mainView;
#pragma mark Initializer
- (void)init;
#pragma mark Outlets
@property (assign) IBOutlet NSBox *mainView;
#pragma mark Instance
- (MYViewController *)createView:(NSManagedObject *)mo;
-(void)displayMainViewWithController:(NSViewController *)viewController;
-(BOOL)tryToEndCurrentEdits;
#pragma mark Notifications
- (void)showMyView:(NSNotification *)notification;
@end
#import "MainViewManager.h"
@implementation MainViewManager
#pragma mark Initializer
- (void)init{
if (self = [super init]) {
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
[nc addObserver:self selector:@selector(showMyView:) name:@"ShowView" object:nil];
#pragma mark Destructors
- (void)dealloc{
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
[nc removeObserver:self forKeyPath:nil];
[super dealloc];
#pragma mark Outlets
@synthesize mainView;
#pragma mark Instance Methods
- (MyViewController *)createView:(NSManagedObject *)mo{
MYViewController *newView = [[MYViewController alloc]initWithNibName:@"MYView" bundle:nil];
[newView setRepresentedObject:mo];
return newView;
-(void)displayMainViewWithController:(NSViewController *)viewController{
if ([self tryToEndCurrentEdits]) {
// Put the view in the box
NSView *vw = [viewController view];
// Set the new view
[mainView setContentView:vw];
// This method attempts to end any current edits. It returns YES if successful.
-(BOOL)tryToEndCurrentEdits{
// Try to end editing
NSWindow *win = [mainView window];
BOOL endedEditing = [win makeFirstResponder:win];
if(!endedEditing){
NSBeep();
return NO;
return YES;
#pragma mark Notifications
- (void)showMyView:(NSNotification *)notification{
NSManagedObject *mo = (NSManagedObject *)[[notification userInfo]objectForKey:@"addedObject"];
[self displayMainViewWithController:[self createView:mo]];
@end

Answer 1

I thought I would let everyone off the hook. I finally found the problem. I can't explain the problem, but I was able to fix it. It appears that my application got corrupted somehow. The way I finally found this was I built a test application and built that part the same way. It worked perfectly including fully instantiated view objects. So now everything is working.