Need Help!!! Kontrol S4 + MF Problem
Hi, so i recently added a MF Classic to my setup, i was using the Ifighter mapping in my gigs but i wanted the button feel!!! So last night i had a gig and i setup everything as usual and started playing and all of the sudden doing a MF Combo Traktor just crashed!!! 150 people where buuuuuing me 
so i rebooted my MBP and in a minute started playing again mainly using my effects from the S4 and when everything started flowing i began to use the MF and pummmm Traktor crashed again!!! it was the worst feeling ever, i even had to go with the place setup (cdj 100 mk3 djm 800) for the rest of the night with some backups cds i always bring. What can be happening???
My setup is MBP 13 8gb ram, 256 SSD Traktor SP2, kontrol s4, and the MF
Pleaseeee help me!
Thanks in advance!!!