Map Crash Fixer
by TechStreet
Map Crash Fixer is a Fabric utility for Minecraft 1.17.1 that addresses crashes caused by map data.
What it does
Map Crash Fixer targets a bug in 1.17.1 where maps crash the game. Maps store their colors as an array of bytes, and that array is sized to the number of colors Minecraft allows. Entries in the array that no color uses yet can be left empty, and the mod deals with those empty entries so that maps no longer crash the client. The mod is built on original code by Owen1212055.
Only the client needs the mod, so servers and other players do not have to install it. It is published for Fabric only, with a single file for 1.17.1, and the code is released under the MIT License as open source.
Key features
Map crash fix
Stops crashes that occur when a map contains colors the color array does not hold.
Empty color entries
Handles color array slots that no color has been assigned to, which the game would otherwise treat as missing.
Issue tracker
Public issue tracker and source code let players report map crashes and follow fixes.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Map Crash Fixer need to be installed on servers?
Which Minecraft versions does Map Crash Fixer support?
In the catalog
Map Crash Fixer is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 4,181 mods support Minecraft 1.17.1.
More from TechStreet
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What the author says
Maps contain an array of bytes that each represent their own colors and hes the explaination. Minecraft has a limited amount of colors, as a result they have the map color array sized to have the appropriate amount of colors. However, not every color is used yet. This means some objects stored in the array are NULL.
Official listing
- Modrinth page
- modrinth.com/mod/mapcrashfixer
- Owner
- TechStreet
- Published
- 2021-10-19
- Updated on Modrinth
- 2021-10-19
- Facts verified
- 2026-10-15