Terence:
Note that there was a problem with the installation program and certain versions of Windows. This has been corrected for quite some time (from what I remember).
You can download the latest version of RMS or RiverCAD from our web site and install with that. Should not have the problem that you ran into.
Sorry for the inconvenience.
Sincerely,
Chris E. Maeder, M.S.
Senior Technical Engineer
chris.maeder@bossintl.com