I use two computers running in parallel as mentioned in a different thread.
On my studio computer I edit the sounds I need for live playing and copy the preset folders of the instruments/FX I use to the appropriate place of the main live computer (most the time “…user…\Documents” or “…user…\AppData\Roaming”).
On the live computer the instruments are in linked racks and I make rack states with the sounds I need (songs/song states etc.). In addition I put backing track files to “…user…\documents\cantabile\audio” and the lead sheets in a subfolder of “…user…\documents\cantabile”.
For keeping it somehow synced with the backup computer I copy the “…user…\documents\cantabile” folder of the main live computer to a stick.
I do it for the preset folders of the instruments/FX too for the sake of completeness. I think the latter wouldn’t be necessary since I use cantabiles preset system.
On the backup computer I insert the stick and set the “…\cantabile” folder to “sort by date”. Then I copy only newer files to the appropriate folders of “…user…\documents\cantabile”.
Of course I have to make sure that the plugins on both computers are available.
I don’t deal with the settings since for me it is easy to make the Cantabile3-GUI look identical on both systems with a few clicks (and it is a one time procedure).