Hi Joe,
Welcome to the forums!
Just to clarify...
Can you please load a style with a MIDISuperTrack (MST). In Stylepicker, these styles will start with M_
1. the track that contains the MST should be blue (like "Piano" on the image below) -- Is this correct?
2. If you click on the "Plugins" tab of the Mixer (#1, image below), you should see something like "Sforzando" or "Plogue" listed in the left most of four plugin locations (#2 on image). The other three plugin locations will have "none". Do you get this?
Lastly... Under "Help | About Band In A Box" can you doublecheck that update #818 is installed. It will be in brackets following the version of program.
If it's not #818, visit the link below, download the update and manually install it. Just doublecheck that the directory paths are correct when you get to that part of the installation.
https://www.pgmusic.com/support_windowsupdates.htmRegards,
Noel