CDJ 2000 NEXUS AND REKORDBOX DJ

For control or for audio?

make sure "external" is selected as your audio mixer mode preference in settings and you may have to create an aggregate device if you're on a mac. Not home to test yet

For control,i tried using it in external,still having the same problem works ok in traktor if that helps

Do you have the CDJ player numbers assigned correctly?

numbers ?

Yes - each CDJ has a player number in the display. Did you set that to be different from each-other?

will try this tomorrow and get back to you,thanks for your help

Thanks for your help,sorted now