can't launch after installing 1.5.1

[steve]

so when i try to launch the game, i get the following message:

could not find all the required patch files. please reinstall the 1.5.1 update.

i did that, no luck. tried using the 1.5.1b update; no luck. my specs:
win98se
nvidia gforce4 ti4200 (latest drivers_
amd 3000
512mb ddr ram
sbaudigy 1 (latest drivers)
i'm using the version of sb that came with the total codex set. any help would be much appreciated!
thx.
steve

[Myrd]

Try re-downloading the update. I believe the early installers had a problem where they would forget to install "Patch 1.4 Interface" on a fresh update.

[iron]

If there's still a problem cut & paste the contents of myth_log.txt here - that should show the cause.