After returning to Oblivion from a several month break, I found that my Oblivion Mod Manager does not have all of the mods that I had before. I checked the Data folder and the .esp/.esm's are all still there along with the meshes and textures. The Manager also won't let me select any of these mods using "add file", "add archive", or "add folder". If anyone else has had this issue, any help is greatly appreciated. Thanks!