How would one go about getting Bot parts to register? I have access to the full installer, but because I'm using a steam installation, I'm forced to install bot parts manually, which prevents me from sharing them. How would I get this to work?
You can't. It only registers as part of the promotion. The promotion ended a few years ago. All downloadable bot parts don't allow creation sharing.
Doesn't the installer that came from the promotion do the actual registering? If it does, then I can only assume getting that to work would fix the issue.
The installer for the promotion isn't available, even IF that was the way it worked. You needed a code, you needed to put it in on a website that doesn't exist anymore.