Oh...I was confusing serial with registration. Sorry.
Did you down load MC6? If so I would think that the email with the download link would also contain the serial. It's been so long since I bought my last product..... I can't remember the details, but I also know they keep all your numbers in an account which you set up and register so if you have issues later everything is in one handy place.
Double check your email account
s because I have ordered and received some downloaded versions of MC5 & 6...and both times I got several emails and "hidden" in them were the download links and the serial numbers. serials normally start out MC06-xxxxxxxxx if I recall correctly look for something similar in the emails.....
I do recall thinking the same thing... that I should have gotten the serials and was getting kinda ticked.... then I thought about double checking my OTHER email accounts and saw several additional emails from cake. If you already own registered cake products, check ALL your email boxes.....as it turned out, the emails with the serials were sent to a different email box..... not the gmail I normally used but the original one I registered the account with..... waaa laaa..there it was....