Read the 'Sticky' at the head for the main Sound Forge forum page. Which version of SF? #, Audio Studio, Pro, Pro Suite Was SF purchased from Magix?? (or a third-party seller like Best Buy) Was it purchased singularly, or with the Vegas Pro package deal??? (third-party plug-ins are not included with the VP deal)
@Steven-Bradshaw All activation codes should be listed in your order confirmation e-mail were you also found your Sound Forge serial number. But like rraud said, third party plugins are not included in the SF version that came with Vegas Pro.
The third-party (iZotope) plug-ins (activation codes) are not included when SFP is included with Vegas Pro package purchase. Magix does not clearly state this and my (non-management) contacts at Magix don't know why either. So if you want the iZ Elements plugs, they must be purchased from iZotope.