CDJ 850 Deck Selection for the New Serato DJ update 1.9.4

In the past I was able to choose which CDJ I wanted to control with which deck in Serato DJ. Since the Update I am unable to do so. When I press the PC button on the CDJ booth defaults using the first deck in the software. I am unable to choose the second, third nor the fourth. Can someone help me with this issue! Will there be a firmware update to handle this problem. I have a couple of gigs this weekend! I am using the Rane 64, Macbook Pro, Serato DJ 1.9.4! My CDJ 850 firmware is 1.12 version.....

Thanks....