I've downloaded UT:GOTY 4 times now, and I get the attached error each time. Says the installer is corrupted. I've used the GOG downloader twice and Firefox 3 twice, but I keep getting corruption errors upon trying to run the installer. Has anyone else experienced this? Is there a fix?

I experienced this when I tried to install UT:2004, after downloading it. I am now making another attempt.

the MD5 for each download is different. I have a limit on my weekly downstream, so I cannot just keep downloading this file. Is there any other way to get this file? Anyone have any ideas?

I tried downloading directly from 'My account', instead of the GOG-downloader. And it worked! The setup is no longer corrupt. However I have no idea if it will work the same way for the original Unreal Tournament, but it might be worth an attempt.

try direct downloads - try turning off a firewall while you download - try a different browser - try to defrag your harddrive you are downloading to
are just gog downloads corrupted or has that happened before already?

try pausing the download halfway through then resuming, it worked for me and fallout tactics.