Fix Long Number Crash

Fix Long Number Crash

Fixes an engine bug that causes a crash when entering very long numbers in a numeric entry box

by Rex (Th3Fanbus)v1.2.1vanilla-friendlyqolclient
1.5K
Downloads
113.2K
Views
March 22, 2024
Created
July 8, 2026
Updated

Description

When entering very large numbers in a numeric entry box, the game can crash with an integer divide-by-zero exception. This is caused by a bug in Unreal Engine regarding grouping when formatting decimal numbers, and I submitted a PR (https://github.com/EpicGames/UnrealEngine/pull/11663) to fix it. However, Coffee Stain Studios would still need to incorporate this fix into their custom Unreal Engine and ship it in a game update. In the meantime, this mod allows fixing the bug, using a hook to replace the affected code with a fixed copy.

This mod can also be used in the editor. However, building the source code requires manually reconstructing part of it. We have to duplicate about 500 lines of code because we cannot hook the affected function directly (it is static), but the UE license does not allow publishing long fragments of engine code. The comment in `Source/FixLongNumberCrash/Private/FixLongNumberCrash.cpp` contains instructions on how to manually reconstruct the mod's code.

Note: This fix is already included in the editor builds since UE 5.3.2-css-68 (https://github.com/satisfactorymodding/UnrealEngine/commit/17c57b42b34b27e9e05ce93ba7c074b59aa38798), so you do not need to use this mod in the editor anymore.

Versions

v1.2.1release
628 downloadsJuly 5, 2025
v1.2.0release
51 downloadsJuly 1, 2025
v1.1.0release
315 downloadsMarch 3, 2025

How to Install Fix Long Number Crash on Your Server

1

Order Satisfactory Server

Order a Satisfactory server with at least 4 GB RAM (6 GB recommended). For multiplayer: per 4 players.

2

Install Mod

Open the mod manager in the dashboard and search for "Fix Long Number Crash". Installation dependencies are installed automatically.

3

Restart Server

Restart the server so the mod is loaded. Players need to have the mod installed locally as well.

Frequently Asked Questions

Fix Long Number Crash not working after update – what to do?

After a Satisfactory update, mods need to be updated. Check ficsit.app whether Fix Long Number Crash has been updated for the new game version. With Mado Hosting: open the mod manager and click "Update All". If the mod hasn't been updated yet, temporarily remove it so the server starts.

Fix Long Number Crash causing crashes in multiplayer – solution

Most common cause: all players must have exactly the same mod version installed. Check server logs for "ModMismatch" or "Version Conflict". Ensure all players use Fix Long Number Crash v1.2.1 and the same SML. With Mado Hosting, Satisfactory servers run with 6 GB RAM for stable multiplayer performance.

Is Fix Long Number Crash compatible with other Satisfactory mods?

Fix Long Number Crash uses the Satisfactory Mod Loader (SML). Generally, SML-based mods are cross-compatible, but mods modifying the same game systems can cause conflicts. Test new mod combinations on a backup save. The Mado dashboard automatically detects known conflicts and warns you.

Rent Fix Long Number Crash Server

Play Fix Long Number Crash on your own Satisfactory server with mod support.

Recommended RAM
6 GBfrom €12/mo
Minimum 4 GB | €2/GB
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Mod Information

Author
Rex (Th3Fanbus)
Latest Version
v1.2.1
Created
March 22, 2024
Last Updated
July 8, 2026
Source Code
GitHub β†’
Fix Long Number Crash Mod β€” Satisfactory Server Hosting | Mado Hosting | Mado Hosting