If I remember right the 1603 error occurs because the silent installation can’t find the LiveUpdate setup files.I put the whole BE installation source on a UNC share and install it from the path \BE\WinNT\Install\BEx64 with setup.exe /RA: /S:
This way the installer finds all the files he needs.
Great, thanks for that. I had copied across some of the folders but not all of them. Copying them all in the complete folder structure as laid out on the DVD.