Check your itemised order history at DAZ - if you bought the Marlin from Zygote (and it seems unlikely it would have been a weekly freebie) the record should have been transferred when DAZ separated from Zygote. If it's there you should be able to reset the download. Failing that try contacting DAZ - give the rought date of your purchase and the email address you used at Zygote and they may be able to find the order on the old system (use the Contact Form and select sales as the destination).