since the new version 5.09, the central mixing crossfader is not responding.

hi, first time here, 
i have the djcontrol inpulse 300 with the latest firmware and djuice version 5.09. (audio signal sent through my pc headphones)
since i recently installed the 5.09 i noticed that the central crossfade button is not doing anything anymore (but it is sending the signal to the software interface cause i can see it moving accordingly).is there a workaround for this ? do you guys have the same issue ?
thanks