We have just send version 1.2.1.0 to your order history pages. These new version can NOT be installed with the updater as we changed a few things that updater can't do (like edit a link in the Windows Start menu). So these are full new builds.
We advise you follow this update procedure:
remove the product using the Windows Software control panel (do not manually delete the program files)
do a disk check (right click on the drive, select properties, select tools, select