You will need to run the registrations through Michael Bedesem's program RegFix to adjust them. The latest version has added the S900.
See update at http://www.svpworld.com/beta/ but you would need the run the orginal program before the update and that can be found at http://www.svpworld.com/util_regfix.htm
After running the original download and unzip into /Program Files/RegFix and say yes to all replacements.
Keith