Yeah, it was a disc for the main program, Expansion is a download with serial.
Just popped back in to say that my issue is resolved. My own stupidity. Forgot that I had installed the demo quite some time ago and the new install didn't overwrite it directly so there was a conflict. As soon as I did a complete uninstall and reinstall it recognized the serial.
Gotta say, I'm more of a rock and metal guitarist most of the time, but I like to experiment with electronic music as well, and I'm liking what I see so far. (I'll be hating the fact that I woke up at 3:30AM and started playing with it by the time I hit noon at my day job though.) Gotta finish up the rest of the tutorials on YouTube and continue the experimentation though.