The support page: http://www.nchsoftware.com/invoice/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 path you have given me is correct, but the "Library" foldr 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. and everything except some of the preferences was there.