I think that software was bought out by Macrovision and they are now pushing their RoboDemo software instead. That's why they are not responding to your Registration request. As a matter of a fact, if you try to re-install that software in XP Pro SP2, it won't finish re-installing itself again and there is not removal entry in the Add/Remove listings.
Does anyone have a reg number for CamStudio 2.1 or know what's become of it? I have a copy and it's a free program but the company doesn't seem to be responding to the registration request. I've sent an email to the email address on the website with no response.

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