I mistakenly deleted a default action group 'Standard' which has maybe 6 or 8 actions.
This was by carelessly clicking the icon for the task (X).
However no warning was displayed of my pending mistake. (This would be nice )
How might I restore this lost group. (Reinstalling the app does not solve the matter.)
Are these scripts stored somewhere in the app folder tree that I can copy & paste?
AFAIK the actions are (special) text files that get removed from the file system if you use the delete button. So I doubt that you find the action anywhere unless you have a backup of the %appdata%\mp3tag\data\actions folder.
In %appdata%\mp3tag\data\actions folder I have a file Standard.mta with content.
I cannot find any method to import this 'special format file'.
Is this covered somewhere in the forum already??
Before you take the effort to find the correct folder (here is a thread that deals with backup and installation: /t/964/1
you might open the mta-file with the Windows Editor and see if it really contains the actions of your action group.
Places that might also contain mta-files:
the installation folder for MP3tag
the program folder of a portable MP3tag installation.
As you found the standard.mta files in the %appdata%\mp3tg\data\actions folder it is fairly likely, that you have a portable or migrated installation that does not use that folder.
This was v2.78 that was missing the said files in both folders above. This was not corrected by updating to v 2.79. ( I expected this to fixed, maybe wrongly, by update but not so for unknown reasons.)
However I was able to correct this situation by uninstalling FULLY the updated v 2.79 and then reinstalling v 2.79 as a new instance. This then restored the missing system file 'standard.mta' to both folders above and showed it correctly in the Action menu list.
This was what I needed. Thanks