I noticed that your preference settings were different as described in the http://www.bmwnavaddpoi.co.uk/imageway.htm site.
I tried with your settings and that gave me a image that was far less big and that I can burn. The issue seemed to be solved. I will report it by the feedback button. Hopefully I didn't make any mistakes in the files so everything will work fine. I let you know guys and thanks for the good support!