To be fair to ORBX and Flightsimstore.com they have been very good about sorting things out. I now have a newly downloaded copy of NZNI which is working perfectly and looks great. Flightsimstore has given me a $30 credit voucher ( my idea for the voucher and i left the price up to him) so in the end the scenery effectively cost me $12.
I am very happy with both ORBX and Flightsimstore. Luckily i had a pretty good backup of my FS system. Unfortunately my FSINN is not working at all and i cannot get it to recognise my FSX no matter what i try. I am going to remove it and try a reinstall and see if that helps. Once that is fixed i will be back to online flying but until then it will be offline flights for me, starting with Alex to Ardmore (yes i am going to fly an alphabetical tour of NZ).