OHAttributedLabel carshes (points to null object)

I have used your great framework (latest update) in my app. I used its markup parser to detect special words and show its synonym.

but after touching some words it crashes suddenly with this strange error in device console:
: libMobileGestalt copySystemVersionDictionaryValue: Could not lookup ReleaseType from system version dictionary

in Xcode 5 it doesnt crash soon. (maybe because of enough ram on my macBook).

but in both it crashes.

here is an screenshot of xcode:

it doesnt show any error related to my code. it is memmory related error. how can I solve it?