Steve: your link returns a colourful Page Not Found, but I had found the reference exclusively to VST3 simply by using the Products pull-down at the top of Cake's home page. I confess I didn't spend too much time researching it but just put 2 and 2 together and made 4 (or rather I couldn't see 2 at all but could see 3). I can see the dll lurking next to the mini-host now, but I am not seeing it in Plugin Manager, although it lies in one of my scan paths (along with umpteen other CW VST2s that are available). I don't have the time to delve deeper into this mystery today, regrettably.
Jonesy: I have left both of those boxes unchecked, because experience tells that typically any such glib automation methods often work fine most of the time, but when they occasionally get it wrong, the mess outweighs any advantage. Hmm ... sorry ... I must be in an atypically cynical frame of mind today: I'll be better after breakfast, I promise.