Only recognizing one CDJ.

Hi,
Hope someone can help me out. I have searched high & low for my problem I'm having but to no avail...
I've set up my CDJ900s on their seperate channels for use with MixVibes, but both players are playing on channel 1 (Deck A) only. I can't think of anything else I can configure for them to play on each channel, decks A & B.
They work fine when using Traktor Pro 2.
Any ideas?
Thanks
Hope someone can help me out. I have searched high & low for my problem I'm having but to no avail...
I've set up my CDJ900s on their seperate channels for use with MixVibes, but both players are playing on channel 1 (Deck A) only. I can't think of anything else I can configure for them to play on each channel, decks A & B.
They work fine when using Traktor Pro 2.
Any ideas?
Thanks