I have always wanted to make fan levels for Tomb Raider, particularly 2 and 3 which were my first ever video games.

To do that, I need Dxtre3D and it requires you to replace the demo file (not always a WAD) in the demo's data folder with the newly made one

However, the demos in Tomb Raider Chronicles.net only have an EXE file and no "data" folder. Are they a newer version and if so, where can I find the ones DXtre3D needs?

EDIT: apparently the demos simply weren't installed, but when I try to install them, I get an error -113 message. What does it mean and how can it be fixed?

EDIT Again: oh wait. I was just running TR3 the full game as I tried the install and it got confused. (whoops)