Unofficial "fix" files are common vectors for viruses.
Before looking for external downloads, use the built-in tool in the Steam Library to repair the game. Right-click in your Library. Select Properties > Installed Files . Zone En-core-pre-gfx File Download
Switch the language to something else (e.g., French), let it download briefly, then switch back to . This forces Steam to re-download the core en_ (English) zone files. 4. Launch Directly from the Directory Unofficial "fix" files are common vectors for viruses