Re: NSMutableDictionary & Strings - Weird, weird problem

FROM : I. Savant
DATE : Fri Jun 30 22:45:23 2006

Use the debugger. Set a breakpoint on -[NSException raise] and let 
us know what you find.

  Also, post your code. At this point it looks like you may be 
loading the contents of your file as a string and trying to treat it 
as an NSMutableDictionary. You could also be trying to manipulate 
preferencesDictionary but it's since been released (or autoreleased) 
and the address is no longer valid.

  We can't tell because we have no idea what you're actually doing 
(since you haven't posted your code). All we've got are guesses. :-)

--
I.S.


On Jun 30, 2006, at 4:33 PM, Bobby B wrote:

> Hey guys
>
> In my program, I have a NSMutableDictionary that I save to a .plist,
> and reload on startup.  I'm having an extremely odd problem with it.
>
> Some of the strings I want to save are strings that look like URLs,
> but they are strings.  It seems to save them fine, but when I load the
> Dictionary back from the harddrive, it crashes out on me and gives me
> an error:
>
> 2006-06-30 16:21:56.243 AMP[3509] http://www.mp3car.com/vbulletin/
> 2006-06-30 16:21:56.252 AMP[3509] An uncaught exception was raised
> 2006-06-30 16:21:56.271 AMP[3509] [<NSCFString 0xa3cb300>
> valueForUndefinedKey:]: this class is not key value coding-compliant
> for the key SYSTEM_VOLUME.
> 2006-06-30 16:21:56.332 AMP[3509] *** Uncaught exception:
> <NSUnknownKeyException> [<NSCFString 0xa3cb300>
> valueForUndefinedKey:]: this class is not key value coding-compliant
> for the key SYSTEM_VOLUME.
>
>
> (But SYSTEM_VOLUME isn't the related key.  The related key is
> something totally different - and SYSTEM_VOLUME, along with every
> other key look perfect when I view the .plist in an editor)
>
> Here is a specific string it crashes on:
>
> http://www.mp3car.com/vbulletin/
> It crashes on that, but the following it has no problem with:
> http://www.mp3car.com/
> Nor does it have a problem with this:
> http://www.aychamo.com/?page_id=4
>
> So what is it in /vbulletin/ that causes it to crash?  I can't for my
> life figure this out.  I've been playing with it all day and feel as
> though I've hit a wall. Whatever it is in that string, it sure makes
> it crash.  This is the line of code I use to set the string value into
> the dictionary:
>
> [preferencesDictionary setValue:[browserAddress stringValue]
> forKey:@"BROWSER_FAVORITES_1"];
>
> (browserAddress is just a NSTextField)
> And then I just save the dictionary to a file..  seem's pretty 
> harmless to me.
>
> Does anyone have an idea where I should start looking??
> Thank you
> Bobby
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