We did build and test most OS X machines on 10.10.5. We'll try on the newest tonight for you =) Can we ask what machine you're one?
I'm running on the following specs:Mac Pro (end 2013)3,5 GHz 6-Core Intel Xeon E532 GB 1866 MHz DDR3 ECCAMD FirePro D500 3072 MBHope this helps :)
