No Sound After Keyboard change

So I solved my Problem with Lounge lizard/ jbridge I prepared my Setup for the upcoming Gig … in my Home i work with a EMU xboard 61. I Used my Performance Laptop/Tascam external soundcard. Well, in my Gig Setup I use a Oxygen 61. so I changed the midi mainkeyboard over the options and nothing works…i saw all indicators Green Blinking but no Sound…