You'd have won the bet.
For some reason I had a placed a NSString instead of a DBNNote into the array; probably for debugging purposes... Thanks a million, I had zero chaces of tracing this bug by myself, for I thought the description was the appropriate one...
I owe you a pint,
Davide

Il giorno 19/mar/08, alle ore 17:40, Julien Jalon ha scritto:
I'd bet the firstNote object is not a "DBNNote" instance but an NSString instance.

On Wed, Mar 19, 2008 at 5:33 PM, Davide Benini <[EMAIL PROTECTED]> wrote:
Hello folks.
I receive an exception message and my application exits whenever I try
to access properties or methods of an instance of DBNNote, a custo
made class.
Here is the code:

DBNNote *firstNote= [[tune body] objectAtIndex:0];
NSLog(@"%@", firstNote);
NSLog(@"%@", [firstNote accident]);

And this is the exception:

2008-03-19 17:19:30.957 cocoabc[10832:10b] Note: A flat Octave: 6
Duration: 3.000000
2008-03-19 17:19:30.957 cocoabc[10832:10b] *** -[NSCFString accident]:
unrecognized selector sent to instance 0x33b040
2008-03-19 17:19:30.958 cocoabc[10832:10b] An uncaught exception was
raised
2008-03-19 17:19:30.958 cocoabc[10832:10b] *** -[NSCFString accident]:
unrecognized selector sent to instance 0x33b040
2008-03-19 17:19:30.959 cocoabc[10832:10b] *** Terminating app due to
uncaught exception 'NSInvalidArgumentException', reason: '*** -
[NSCFString accident]: unrecognized selector sent to instance 0x33b040'
2008-03-19 17:19:30.959 cocoabc[10832:10b] Stack: (
    2505978443,
    2451210491,
    2506007626,
    2506000972,
    2506001170,
    13259,
    8495,
    2506037845,
    2490420930,
    2490380524,
    2490378829,
    2490377872,
    2490377678,
    2490376830,
    8372,
    8298
)

The Debugger has exited due to signal 5 (SIGTRAP).The Debugger has
exited due to signal 5 (SIGTRAP).


As you see the first line of the exception message correctly logs
[firstNote description].
The second NSLog should print "flat".
So it appears the object is correctly instantiated, yet I cannot
access its methods. I have tried to call both methods and properties
accessors, but no call works so far. I have a feeling I am making a
very basic mistake, but I can't tell which one.
Any suggestion?
Davide
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