Use both FX channels on DDJ-SP1

I have a problem where I can only use one channel (The Left one) on my DDJ-SP1 when I'm using DVS.

It dosen't matter if I select Channel two on the right FX panel, it dosen't respond and Rekordbox tells me that I can only use one channel for FX and such. The other FX panel in Rekordbox don't have any options when it comes to change channel.