I discovered some new info regarding the back up issues on a mac...
From the support page: http://www.nchsoftwa...ce/support.html
"Where does Express Invoice store my data?
Express Invoice stores data in the following locations:
Windows 2000/XP: C:\Documents and Settings\All Users\Application Data\NCH Software\Express Invoice
Windows Vista/7/8: C:\ProgramData\NCH Software\Express Invoice
Mac: User/Library/NCH Software/Express Invoice"
Under further investigation, I have found out the correct path is /Users/$USER/Library/Application Support/NCH Software/ExpressInvoice/Shared where $USER is the username. The problem is the "Library" folder under "$USER" is actually a ".Library" folder. This makes all of the Library's content hidden, even to searches which is why I could not find it. I suspect this is the reason the back up and restore scripts do not work.
Actually, the "back up" scripts works, as I have seen the contents of a back up on my USB drive, but the restore command fails every time.
I have since made my files "visible", and then copied all the info over to my new mac, a
nd everything except some of the preferences was there.