Well, from my screenshot, you can very well trust me that 7 works completely perfect with SF9 regardless of what Sony says.
How can I say this?...um...
Here's what I would do if I were you. Pay them for the software so you are a licensed user.
Then find a torrent with it and the patcher that works great.
In your case, you may need to clean the registry of any previous Sound Forge entries, or possibly clean install 7 first.
My point is if you have a clean system, it will install for you perfectly and then you can patch it to run without ever connecting to their servers.
But make sure you pay them first! lol