I think this is simply a licensing/sales issue caused by product bundling. There were two editions of SQL Bundle, standard and pro. And before that it was called 'developer edition'. At any rate, the Packager was only included with the high-end bundle. If you have a separate serial number for SQL Compare and Data Compare, then you should have one for Packager, beginning with '009'.
Hopefully this clears things up. If you have any questions about your invoice or purchase history, please ask sales -at- red-gate.com.