Fg-optional-mp-files.bin

Delete all cache files in the same directory:

Then, run a manual scenery check using FlightGear’s launcher → Settings → “Download scenery on demand”.

Yes, absolutely. This is the most common and effective fix for cache-related issues. Deleting the file is 100% safe.

Here’s what happens when you delete it: fg-optional-mp-files.bin

When should you delete it?

The file fg-optional-mp-files.bin is a component of a FitGirl Repack, specifically containing multiplayer (MP) data for a game. FitGirl uses these .bin files to allow "selective downloading," where users can skip content they don't need to save disk space and bandwidth. Key Characteristics of "fg-optional-mp-files.bin"

Purpose: It contains the assets required for a game's multiplayer modes. Delete all cache files in the same directory:

Optional Status: If you only plan to play the single-player campaign, you can typically skip this file during the download or uncheck it in your torrent client.

Installation: During the setup process, the installer will detect if this file is present. If it is, multiplayer components will be installed; if not, they will be omitted.

Potential Risks: Missing this file while attempting to access multiplayer modes will usually cause the game to crash or fail to load those specific sections. When Should You Download It? Download Recommendation Single-player only Skip to save space. Multiplayer / Co-op Required for the mode to function. Future Updates Then, run a manual scenery check using FlightGear’s

Recommended, as some updates may require all optional components to install correctly.

For more specific troubleshooting or download instructions, you can check community discussions on Reddit's CrackSupport or the FitGirl Repacks subreddit.

Rename it to fg-optional-mp-files.bin.old instead of deleting. This allows you to restore it if something unexpected happens.

If you suspect fg-optional-mp-files.bin is causing trouble, follow this workflow:

On Linux or macOS, improper file ownership can lock the file. You might see Permission denied when FlightGear tries to update the cache, forcing it to rebuild a temporary cache that never persists between sessions.