the kde.org D/L of OSX Kstars 3.6.0 crashed at startup for me as well. Never got to any display at al, and kstars would need to be force quit to continue. Interestingly, this build also caused my install of 3.5.9 to fail in the same manner. Pointed to some corruption of a common lib or data.
Just removed the preference file and application support fiules, downloaded the nightly version 1633, and it works fine.