Cubase and Zoom R24

Since upgrading to Cubase 7.5 my Zoom R24 does not work properly. The master fader works but none of the other faders do. Everything is setup correctly and I can only assume this is a problem with the Zoom driver or Cubase 7 and 7.5 as it worked fine in version 6.
I cannot get any support from Steinberb as they just say they don,to support it and Zoom do not know the reason.
Anyone here had this issue or know the solution?

I assume that as there are no replies nobody has had this problem. Are any of you guys using a Zoom R24 successfully with version 7 or 7.5?