I followed the instructions (sans "load custom material maps" and "prefetch custom textures" because the options did not show?) but the .exe file doesn't work? When I put it into Ishiiruka Dolphin a window pops up for barley a second then immediately closes. What's up with that?
Make sure that Windows Defender is not blocking any files! If that doesn't work, try re-extracing the files from the texture pack .zip again.