Hey,
I have the same problem.
I have kontakt ultimate 10 and got the upgrade to the collectors edition but I get the message " you are missing the base product for which this uprade/crossgrade/update is valid"
it is strange because when I look the product up on the site it tells me the same thing. I am missing one of the products but when I look at my products and registrations Kontakt ultimate 10 is clearly in the list so I don't know what to do anymore..
Can someone help me?