V15h will not render out SO chors (always crashes) on OSX. (It works on Windows). 2_12_01 always crashes at frame 91 no matter what render option I choose (to QT, to file). I've reported it so if you are on OSX and doing SO stuff then I do not recommend installing v15h.
Edit: It may just be 2_12_01 as frame 93 causes crashes in 15f and 15g as well.
Cheers
