Although I’ll look into this furhter, I just want to point out that the lowest OSX version we support is 10.7 (and we’ll likely update that soon), and the function (operatingsystemversionstring) you’re using is specified to exist after 10.2.
So there shouldn’t really be a need to use the respondsWithSelector
in this case? This should at least unblock you in this case.
I read too quickly for another function. The operatingsystemversionstring
exists since 10.10