During the setup process, the installer will only attempt to extract this file if it is present in the installation folder. If it is missing, the installer will simply skip the multiplayer components without causing an error. Is it Safe to Skip? Yes, for most users, skipping this file is perfectly fine.
For help with specific installation errors, the FitGirl Repacks Troubleshooting Page is the official resource for resolving CRC mismatches or decompression issues. fg-optional-multiplayer-build.bin
When using a torrent client, you can uncheck this file to reduce the total download size. During the setup process, the installer will only
You plan on using or "online fixes" that allow for private server play or LAN matches. Yes, for most users, skipping this file is perfectly fine
You should include in your download if:
FitGirl's installer is designed to detect which .bin files are present. Skipping an "optional" file will not result in a "missing file" error or a corrupted installation, provided you do not need the specific content it contains.