Has anyone been able to download and install the Trials of the Luremaster content in Windows 10? I keep getting a "catastrophic error" message right after the install wizard boots up. Worked with Windows 7 on my previous system just fine.

As far as I know, Trials of the Luremaster is included in the GOG version of the game. Which one are you using?

Using my CD copies of the original game and its expansion. Getting the free download of Trials of the Luremaster from sorcerers.net or fileplanet.com. The game and its expansion installed just fine (as they did on my previous Windows 7 setup). Trials won't work though. Tried running the application/install wizard for Trials in all the compatibility modes and it runs as administrator by default. No success.