I put all my mods into Package folder on C:/Program Files (x86)/rFactor 2/Packages. When i load up rfactor 2 and click on manage mods i have mods checked and components checked. The directory is setup normal i haven't changed anything and there are no filters everything is highlighted. When i click refresh nothing shows up. I have reinstalled the game and messed around with the filters and checked components/Mods and even the directory folders. Still not even one mod shows up. I have the mods setup to open with Mods manager v0.92t maybe that is the problem?
If it's a default install you need to place them in your data directory not core...Should be Documents/rFactor2/Packages Hope that helps