A mod has overwritten the file with a corrupted or incompatible version.
# 1. Extract jumpbehavior.hkx from Skyrim - Meshes.bsa Bethesda Archive Extractor -> Meshes\actors\character\behaviors\jumpbehavior.hkx jumpbehavior.hkx
: Users have documented similar issues on GitHub for Project New Reign - Nemesis , often noting that manually adding a vanilla version of the file or fixing wrongly named directories can resolve generation failures. A mod has overwritten the file with a
: If the file is missing, you may need to verify your game files through Steam to restore the default behavior. jumpbehavior.hkx