I can’t find my registration card with my serial number on it to authorize Steinberg Nuendo or CubaseSX. What can I do?
For CubaseSX and Nuendo, this is not a huge problem. Look at the side of the box where there should be a UPC sticker. The bottom UPC code has 10 digits in it, and the registration code is the last 9 of it (disregard the first zero). This will authorize your software. To register it with Steinberg, you can simply fax your Sweetwater invoice/receipt in place of your registration card, and let them know that you are missing your registration card.
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