Rob,
The next time you have your packs all set up in YEM, you can save a copy of this setup to a backup drive. Or if you want the same YEM setup on a laptop for instance, you copy it to the laptop. This is how you make a copy the YEM contents:
1. Press the "Windows key"+"R" to open the "Run" window.
2. Type the following string into the "Run" window, then click "Ok".
%LocalAppData%\Yamaha\
3. This opens the folder "C:\ Users\ <YourUsername>\ AppData\ Local\ Yamaha\"
4. COPY the folder "Expansion Manager" to a USB Stick.
To make a copy to a laptop, put the folder "Expansion Manager" in the folder Yamaha, overwriting the existing contents (or deleting it first...)
Stijn