Just one small question: I get an error on one line: the tag <Work title¨> is undefined in your first post for Album/Work:
Thanks for the appreciation techvslife.
It has been a while since I posted this, or reviewed/revised it, but since there have been no reports of errors in what is described currently, I am wondering if this is causing the problem for you:
When adding new virtual formulas and keeping that panel open, MusicBee will do some sort of check if it recognises any <tag> that a new virtual tag entry is referencing.
So if virtual tag #2 is referencing virtual tag #1 that hasn't been saved/welcomed yet, it will say 'computer says no'.
So to be completely safe, you should probably: enter one new virtual tag, press save and close the panel.
Open the panel again, add the next one, press save, and close/open again.
Does that solve it?