Signal 10 and 11, keep popping up when i try and compare 2 NSStrings?

FROM : Tom Hancocks
DATE : Tue Apr 05 18:26:49 2005

Sorry for the long subject line, but i couldn't think of how else to
put it.

Anyways, i'm writing a program, which as i have said before am porting
from REALbasic to Cocoa and i have run straight in to a brick wall
here, with out warning, and now i keep getting Signal 10 and 11 being
returned with in 3 seconds of loading my app. I have traced the problem
to the root of its cause, but the only i have found of getting rid of
the problem is to completely remove the thing that causes it. The
problem is caused by simply comparing 2 NSString Objects.

Here are the declares of the NSString's in the header file:

NSString                    * cLastTrack;
NSString                    * cTrackTitle;

And here's the code where the error is being caused:

- (void)poll
{
   iTunesOpen = [self isiTunesOpen];
   if (!iTunesOpen) return;
   playerState = [self PlayerState];
   [self Volume];
   if (playerState == 0) return;
   [self TrackTitle];
   if (![cTrackTitle isEqualToString:cLastTrack]) { // <<-- This line
here is causing it
       [self TrackArtist];
       //[cLastTrack release];
       cLastTrack = cTrackTitle;
   }
}

Sorry if my code is a little messy, but I am still fairly new to Cocoa.

Tom Hancocks