I got ArtRage 3.5.4 Studio (I know it's old at this point; don't judge), bundled with Wacom Bamboo Splash with no evidence of the box having been opened, and installed it on my laptop with Windows 8.1. I unlocked the software with the provided serial without any problems. However, when I try to register the software online, I get the following message: "The serial you entered has already been registered to another user". I have never successfully registered that product, and it was never opened before I got it as a gift. My first and previous attempt five years ago gave me the same result. Is there a bug or a mistake in Ambient Design's system?