Are there anybody solve this error message?

[joalta]

The message is...

*** Terminating app due to uncaught exception 'NSGenericException', reason: '<AddAnnotation: 0x43b4570> must implement title when canShowCallout is YES on correspoding view <MKPinAnnotationView: 0x43abfb0; frame = (-8 -34; 32 39); layer = <MKLayer: 0x43b6f10>>

i think they're between callout bubble's title and canshowcallout function's problem.
And i did set the title first before 'canShowCallout=YES' to be called.

but i can't solve it.

please help me!

i'm gonna crazy........