IJ> Hi there... I did an upgrade from A46 to A48.  From what I can tell I
 IJ> did what was asked of me... I have found something... When I'm in the
 IJ> ANSI editor and I have completed what I was doing.... and I go to press
 IJ> "Q" to quit  it hangs up on me.
 IJ> I access the BBS setup as a menu option while I'm logged into the BBS

Did you follow the A46 to A47 upgrade instructions first before you did the A47 to A48 instructions?  Here are some specific instructions from the A46 to A47 upgrade:

 - If you use the default msg_editor.ini then you should replace it with the
   new one, otherwise refer to the What's New and the new default template
   for how to upgrade it to support Tagline changes.  You can replace the
   default like this:

     install extract msg_editor.ini c:\mystic\themes\default\text

 - You will need to install the new Taglines template and default Taglines
   database:

     install extract taglines.ans c:\mystic\themes\default\text
     install extract taglines.ini c:\mystic\themes\default\text
     install extract taglines.dat c:\mystic\data

   It is also recommended that you go into System Configuration > New User
   Settings 2 and set "Taglines" to On so new users will default to having
   Taglines enabled if you wish them to (or set to Off if you want them off
   by default).

... What was the best thing before sliced bread?

--- Mystic BBS v1.12 A48 2022/02/15 (Windows/64)