Extract the contents to a shallow directory (e.g., C:\Assets\BG31\ ) to avoid Windows "MAX_PATH" errors which can occur with deeply nested files.
Use the Official WinRAR Tool or 7-Zip for extraction. Older decompression tools may fail to recognize the BG31-specific compression headers. Download [BG31 50] HMOW rar
Ensure your antivirus hasn't quarantined specific executable or library files within the package. Extract the contents to a shallow directory (e