I recently downloaded a mod and went to unzip the file into my Data folder, everything went fine until about 90%. It just abruptly stops and tells me that one of the .nif files is broken, it then just sits there acting like it's still working but doesn't make any progress. Is there any way to restore a corrupted .nif file?

Uhh try redownloading the mod.

Thanks for responding quickly. I've redownloaded the mod a couple times and the same issue keeps preventing the mod from installing. I used it way back in 2011 when it was still being actively worked on, but it's since been abandoned and apparently the last update that was pushed had issues with the meshes.