The file is a data archive file for Grand Theft Auto V (GTA V)
If you are seeing errors specifically mentioning x64u.rpf, it usually indicates a corrupted file during download or installation. This often triggers the "Failed zlib call"
However, without more context or details about what "X64u.rpf" specifically refers to in your scenario (e.g., its origin, the game it's associated with, any error messages you're encountering), providing a precise story or solution is challenging.
For the modding community, x64u.rpf is frequently accessed to swap original game textures or sounds for custom ones.
: Always copy the original file before modifying it.
