Thanks, Michael!  In a way I'm relieved that I'm not the one who screwed up the registration.  Haha.

LOL!
Yeah, I have had that same satisfaction!
Michael

I had the very same error, Celemony informed me that the number I was trying to register (The essentials registration number i recieved with Sonar Platinum) was the same number I had upgraded to Editor that I recieved with X3.
 
I assumed I'd be getting a different number and my idea was that Id have another licence for more installations. Celemony were very efficient at answering my emailed questions.
 
However, Cakewalk are not, a week later and still no reply from Cakewalk support, so don't hold your breath for a reply from them.
 
:(

leemac
I had the very same error, Celemony informed me that the number I was trying to register (The essentials registration number i recieved with Sonar Platinum) was the same number I had upgraded to Editor that I recieved with X3.
 
I assumed I'd be getting a different number and my idea was that Id have another licence for more installations. Celemony were very efficient at answering my emailed questions.
 
However, Cakewalk are not, a week later and still no reply from Cakewalk support, so don't hold your breath for a reply from them.
 
:(

leemac,
When I sent my serial number to Celemony, they said it was registered to another person and asked me to confirm that I am that person.  Is that what happened to you?  Why does Cakewalk have to be involved in your case?

leemac
I assumed I'd be getting a different number and my idea was that Id have another licence for more installations. Celemony were very efficient at answering my emailed questions.
 
:(

That's never been the case with any bundled software I've received when upgrading a core package, no matter who the vendor is. Now, if you buy a new license for Platinum then you'll get a new melodyne license. :)

Ok, so here's the customer service response from Celemony:
 
Dear ____,Thank you for your email. This “Melodyne essential” version 2 serial number is already register by a different customer. Unfortunately our colleagues at Cakewalk made a mistake by handing out some “essential” serial numbers twice. Please go to this website to get this issue taken care of:http://www.cakewalk.com/fix

Not hacked.  Cake gave out serial numbers twice!
 

Oooops    That's pretty weird but I'm sure CW will set your account right.
Michael

The link above takes you to the "Melodyne Essential Serial Number Fixer" at the Cakewalk site.
LOL!  At least Cake apologizes on that page.  But I had never heard of it until Celemony alerted me to it.  Excellent support at Celemony--they responded on a Sunday late night in Germany.
The Cake page asks you to enter serial numbers, and a new Melodyne serial number is generated automatically.  Fast Fix and DONE!  Woooooooo!

Tah Dah!