Unfortunately the error message occurs again when trying to register a new product via the product manager tool.
Looks like the fix was just temporary.
edit:
Maybe nice to know that I tried to register an EZkeys EZX.
edit 2018-04-01:
The problem might be caused by the product manager software, because I had no problems downloading an registering the VINTAGE UPRIGHT as well as the DREAM MACHINE. Thank God there is an alternative way to get the stuff 😉
License transfer fees countervalue is $ 2,250.00
(done...)
So my anger about the Toontrack license transfer fee introduced in June 2021 is not entirely unfounded...