MacBook Pro (13-inch, Mid 2012) 2,9 GHz Intel Core i7, 16 Gb 1600 MHz DDR3, Samsung SSD, macos Sierra 10.12.6 Traktor Kontrol S2 MK2 (2 decks, not using remix decks and stems) enabled multi-core processor. Upgraded to TP3 from TP2. First time worked with TP3 about 9 hours. Everything was good until i load playing track from deck B to deck A using SHIFT+load A buttons on S2 MK2 what caused to crash (was duplicating tracks many times during that session). TP3 was not responding, no sound. I'm very often use copy playing track to empty deck and this operation never causes any trouble with TP2. After this crash I played with TP3 & S2 Mk2 several times about 6 hours each time and all was good. Today again same crash when I load playing track to empty deck, but this time I was using mouse to drag track from playing deck to empty. Usually along with running TP I have several programs opened like: safari, itunes, finder, adobe audition. New device updater for Kontrol S2 MK2 have not bring new firmware (newest is 68 and S2 MK2 have 70 installed). Question to NI: why this simple duplicating operation (load playing track to empty deck) causes to crash TP3? Anyone have this problem?