Mod conflictsIris Shaders: Unknown Error Loading Distant Horizons Compatibility
What it looks like in the log
java.lang.RuntimeException: Unknown error loading Distant Horizons compatibility.
How to fix it
- Update Distant Horizons to the latest available release for your Minecraft version (specifically version 3.3.1 or newer if you are on NeoForge 1.21.1, which fixed an uninitialized API config bug).
- Update Iris Shaders to the latest version from Modrinth or CurseForge so its Distant Horizons compatibility layer matches the current Distant Horizons API.
- Check Iris's release notes or Discord to verify which exact version of Distant Horizons your version of Iris was built against, as beta builds of either mod frequently break API compatibility.
- If no compatible update is available yet, temporarily remove Distant Horizons from your `mods` folder if you want to play with shaders enabled.
| Loaders | Neoforge, Fabric, Quilt |
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| Severity | Breaks something |
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| Category | Mod conflicts |
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Check your own log