Strings does not have CGColor methods so it is not caught. Try break on 
[NSObject doesNotRecognizeSelector:]

Sent from my iPhone

> On May 16, 2014, at 4:01 PM, Torsten Curdt <tcu...@vafer.org> wrote:
> 
> I am seeing a crash in an iOS app and while I can reproduce it I am
> still struggling to find the location in my code because the debugger
> only stops in UIApplicationMain. What I am seeing in the log is
> 
> 2014-05-16 09:46:56.796 MyApp[30998:60b] -[__NSCFString CGColor]:
> unrecognized selector sent to instance 0x10debb640
> 
> Checking the address with `po` I can see the string. But it still did
> not help to find where this happens. I added the following
> breakpoints:
> 
> * All Exceptions
> * -[__NSCFString CGColor]
> * -[NSString CGColor]
> 
> but the CGColor breakpoints are not catching this. Why not?
> How would you track this down?
> 
> 
> I hope this is not too OT. If it is please let me know where to ask instead.
> 
> cheers,
> Torsten
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