Installing the standard Instrument Trees
Instrument trees can get lost. This may help in getting them back.
The standard files that ship with NoteWorthy Composer as of version 2.51 are:
They have not changed since version 2.0, so any back-ups of these files should work.
Step 1: Find the above files and move them to a dedicated folder.
Step 2: Tell the NoteWorthy Composer program where they are:
If you can't find any copies of the files, contact firstname.lastname@example.org as outlined in: NoteWorthy Composer - Support and Help
The download from the topic: General Midi.nwcitree may be of use if the standard files cannot be found.