Array help!

[Eric Lee]

I'm doing Challenge from Chapter 6 in the 3rd edition of the Cocoa  
Programming for mac OS X book, and I've ran into some trouble.

While I'm trying to reload data, there's always this warning the says:
Warning: 'NSScrollView' may not respond to '-reloadData' (Messages  
without a matching method signature will be assumed to return 'id' and  
accept '...' as arguments)

 I have no idea what it means, and no idea how to correct it.

here's the code:

App Controller.m

-----------------------------------------

#import "AppController.h"


@implementation AppController

- (id) init
{
        [super init];
        array = [[NSMutableArray alloc] init];
        
        return self;
}

- (NSInteger)numberOfRowsInTableView:aTableView
{
        return [array count];
}

- (id)tableView:(NSTableView *)aTableView
objectValueForTableColumn:(NSTableColumn *)aTableColumn
                        row:(NSInteger)rowIndex
{
        return [array objectAtIndex:rowIndex];
}

- (void)tableView:(NSTableView *)anotherTableView
   setObjectValue:(id)anObject
   forTableColumn:(NSTableColumn *)anotherTableColumn
                          row:(NSInteger)rowIndex
{
        [array replaceObjectAtIndex:rowIndex withObject:anObject];
}

- (IBAction)addThing:(id) sender
{
        NSString *string = [textField stringValue];
        NSLog(@"Got string %@ from textfield", string);
        
        [array addObject:string];
        [tableView reloadData];
}

@end

AppController.h
----------------------------------

#import <Cocoa/Cocoa.h>


@interface AppController : NSObject {
        NSMutableArray *array;
        IBOutlet NSTextField *textField;
        IBOutlet NSScrollView *tableView;
}

- (IBAction)addThing:(id)sender;

@end
-------

I've connected everything. Also, I think there are other problems,  
since when I press a button that's supposed to add an object into the  
TableView, nothing happens, even though a log appears on the console.

Thanks!
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