[gsparks2]

I went to Preferences>Sending books to devices and entered the template editor and entered the string {author_sort:.1}/{author_sort:sublist(0,1,&)}/{title} ({id})

The Template Value: box shows "EXCEPTION: Value: unknown field id".

Edit: I tried several different templates in this dialog including the default. no matter what I do the filename shows up on the device in the format Title - Authors (id).format with no folder structure at all.