I'm djing tonight on a new Macbook pro. I've used it for a couple of weeks now but never had this problem yet. I do my normal soundcheck and switch from group 1 to group 6 and mess with my fx. Set the bpms for the FX and everything is working fine. 45 minutes later I start mixing to the crowd and the buttons are no longer effecting anything on the serato screen and the same thing with the joysticks. I can't change the bpms on my delay effects. I can't use the cue buttons or switch groups anymore. Does anyone have any idea how to fix this problem or how it happened without closing out serato and restarting? Thanks