Thank you sawshark for that workaround..got the qcon working. was a little confusing so if its any help ill try to explain how i did it below.
Firstly turn on qconpro cubase mode (oor nuendo seems to work the same).
start sonar.
Then I used a physical midi in out box connected to pc via usb which now sits on top on desk for easy access as youll need it every time you load sonar!
Connect the midi in and out using a midi lead.
in sonar go to edit preferences midi devices and ensure the icon and usb midi are highlighted on ins and outs.
go to controllers and in the first line add mackie control...in as your usb midi device and out as your icon pro
second line add mackie control.. in and outs as your usb midi device.
Now load or create a new project.
Click view.. sysex
in the first line add the sysex code as sawshark mentioned.
choose output 2
then send.
also save this sysex file so you can load it in each new project.
If youve done this right the qcon will light up.
Next disconnect the midi lead on your usb device.
in edit preferences change back the controller in line one in as qcon.
Sounds trickier than it is but after a while it gets easier.. it is a pain and appears to need to be done every time you load sonar.