So Ive been trying to run Mechwarrior 2 on my Netfinity PC. I have the Matrox version , but from what Ive seen its perfectly possible to convert that into the 3DFX version via the conversion files. For whatever reason , after converting the game it will not start properly. I can get into the main menu , but when I launch a mission (or training) the game doesn't start but instead gives me the "mission failed" screen straight away. The Matrox version itself runs fine unconverted, but the 3DFX will not start.

Im using a Voodoo1 card (Diamond Monster 3D) and the latest standard 3DFX drivers with Windows 98SE (no unofficial packs) , and obviously a Matrox Mystique 220 (not sure exactly what drivers, its the ones on VOGONS). The board is a custom IBM motherboard running a 440BX chipset. DirectX is 6.1.

Here are my settings in the Autoexec

SET SST_RGAMMA=1.7
SET SST_GGAMMA=1.7
SET SST_BGAMMA=1.7
SET SST_SCREENREFRESH=60
SET FX_GLIDE_SWAPINTERVAL=0
SET FX_GLIDE_NO_SPLASH=0
SET SST_FASTMEM=1
SET SST_FASTPCIRD=1
SST_SWAP_EN_WAIT_ON_VSYNC=0
SET SST_VIDEO_24BPP=1

Also note that every other game that uses the Voodoo works (ones ive tried are Tomb Raider, Nuclear Strike, GLQuake, Quake2 , Fatal Racing), Mechwarrior is the odd one out.

Anyone have any ideas? thanks in advance.