))) After selecting a sololist real-track and hitting "close", the additional 7 tracks don't appear in the VST plugin window. Thus you can't generate the Multi Riffs.
Selecting the multiriff doesn’t generate, you need to press generate. The mutiruffs should be visible on the page 3 of the plugin which you get to from the scroll bar.
I’ll move this post the VST DAW forum, as it doesn’t apply to the desktop version.