Make sure you have read the readme. Copy update and x64 folders to your mods folder, copy common.rpf to your mods folder, and copy x64a through x64w into your mods folder, the mods folder is required. Next, install the oiv in the archive into your game folder. The archive has the mods folder in it but not all the content it needs, so make sure you have done the step above. Next install patchday one, it is one the same website you downloaded redux from. Hopefully this will work for you, if not, it has to be another mod!