It would be better if you install Metastock 11 downloader along with D/C 18 to enable legacy conversions. It would make your life a lot easier to maintain data and work with bonus/split adjustments which are unsupported in the D/C 18 downloader.
Have I understood correctly that you cannot use the downloader from this version? Do I need a different downloader for this? Sorry, guys, but I always have problems importing this Metastock data.