Exact same hassle as the above two.
For something different, had a go at installing the BTS demo to see if the same thing would happen. No worries, installed fine. Tried to install BTS as before, same thing happens, installer checks the DX9 installation, hear the HD working then installer disappears, no error message.
Have installed vanilla Civ IV patched to 1.74 all recommended specs are covered, running XP Pro SP1. Ideas any one?
TIA