Thread:DominusMortem/@comment-24111404-20150712025112/@comment-3547390-20150714005622

Yep, TR1 is a nightmare.

I don't think I know a way, I know a definite way. It just matters your opinion on what modifying a game is. Personally, I feel as long as the only data that is changed is prior to actually starting the game, such as a hex code edit to the executable or a codec installation, it is fine. Raadec was resistant to the method I use for some reason, I think he either ended up just watching them online or got them to work through aggressive reinstalling. I personally know an easy and a hard way, I would rather make it easier for you so that you don't have to do a bunch of extra steps every time you start Thief. What exactly I am suggesting you do would be to get a loader, something designed to load custom levels and whatnot, and change a setting so that it will automatically reinstall a codec that tends to get messed up in newer versions of Windows. You can manually install the codec from the disk, but this does it automatically each time you start the game in this fashion.