I have wrote this mail to the contact support in 03/08 and have no answer:
"The School of Fine Arts of UFMG (the university where I teach) has owned the version 4 of Nuendo ("the first version that was bought 2). I purchased an upgrade to version 5 with NEK5 I registered normally.
I downloaded the update - version 5.5 and 5.5.4 (and the Nuendo NEK) - by following instructions on the site. I installed them in the Mac-OSX Lion Book with no apparent problems.
But I can not register them by following the instructions on page http://www.steinberg.net/en/products/nuendo/how_to_get_the_nuendo_55_update.html.
According to the instructions: “On the top of the page MySteinberg start: Copy the NEK Nuendo 5.5 and the 5.5 (if applicable) activation code (s) from the” Your last license transactions “chart”. But there appears no number / code / serial transactions in chart. When I insist and put the number of eLCC information appears “You have this eLicenser Already registerd on 09.05.2011 at 16:08. Registration is not possible.” The date should refer to the registration of Nuendo 4.
When I enter the eLicenser Control Center (eLCC) and request license updates appears to have no license for any update."
Well, without answer, I uninstalled the Nuendo 5.5.4, installed the version 5.5.0 and again searched the activation code and just find a code for a Nuendo 5.5 Trial. It is correct? I must proceed the activation? I’m afraid to have just a trial version and not a permanent version that I can upgrade to a 5.5.4.