Massive help with an iPhone Application...PLEASE! :(

Question

Hello.
Since yesterday I have been trying to hunt down a bug in a simple iPhone application I made while following an exercise from the iPhone SDK Development book. Its a simple application with a navigation controller and a table view.
You can download my project at
public.me.com/felipelaso
In the main view when the application is opened, you see a list of items and an option to edit them or add an item. When you click on add, a new view controller is popped, you get a textfield and a keyboard, and when you are done you go back to the table view and the name you just entered is added to the list.
The problem is that as soon as you hit done on the keyboard, or click back on the navigation bar I get the following messages in the console:
This GDB was configured as "i386-apple-darwin".warning: Unable to read symbols for "/System/Library/Frameworks/CoreGraphics.framework/CoreGraphics" (file not found).
warning: Unable to read symbols from "CoreGraphics" (not yet mapped into memory).
warning: Unable to read symbols for "/System/Library/Frameworks/UIKit.framework/UIKit" (file not found).
warning: Unable to read symbols from "UIKit" (not yet mapped into memory).
I have reinstalled my developer tools, created a new project from scratch, added the frameworks again and nothing seems to work.
I though it might me something with my frameworks. But then I downloaded a bunch of the samples with table views and navigation controllers, and they all work fine. All my other applications work fine too, except this one.
I have spent all morning, and all afternoon yesterday trying to find out whats wrong, but im not an Xcode or Cocoa expert and I was hoping I could find some help.
The project can be downloaded for anyone to test with.
Please! any help I get would be gladly appreciated.
Thanks in Advance,
Felipe.

Answer 1

Ok I downloaded it, ran it on the simulator and everything was fine. Put it on my device and i got an EXCBADACCESS when I clicked the done button as you described.
EXCBADACCESS means something is getting released before you're trying to access it again. I opened the debug console to see this. Then I opened the debugger to find out exactly what the issue is. In my stack the last custom method that was called is [RootViewController addTeamNamed:] This makes me believe the array is being released.
Now I take your addTeamNamed method and pepper it with log statements:
- (void)addTeamNamed:(NSString *)teamName
NSLog( @"A" );
[teams addObject:teamName];
NSLog( @"B" );
NSIndexPath *indexPath;
indexPath = [NSIndexPath indexPathForRow:[teams indexOfObject:teamName] inSection:0];
NSLog( @"C" );
[[self tableView] insertRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath] withRowAnimation:NO];
NSLog( @"D" );
The console output of which is: "A B C". Ok, no D, so that means the error is the in the insertRows... method.