Wow, my ERPNext ALERTS are not working as they should. I have been here on this thread and a few hours ago @nabinhait answered my original question about how to do a clean install of the v9.x.x branch on another thread. I just got the alert here several hours later.
So for those interested, please see the following post:
The relevant instructions are near the bottom of the thread. There is also another post further down explaining how to set the branch to the v9.x.x for use with install.py See them here:
All good news. Now I just need to see a green test result for that branch.
BKM