Wrong Minecraft versionIris & Sodium Mismatch: Mixin transformation of class_7764 failed (Square Text & Crash)
What the log looks like
java\.util\.concurrent\.CompletionException: java\.lang\.BootstrapMethodError: java\.lang\.RuntimeException: Mixin transformation of net\.minecraft\.class_7764
java\.lang\.IllegalStateException: An invalid version of Sodium is installed, and the warning screen somehow didn't work\.
Skipping sodium\.mixins\.json:features\.mipmaps\.MixinSpriteContents from mod sodium.*already redirected by mixins\.iris\.bettermipmaps\.json:MixinTextureAtlasSprite
How to fix it
- Close Minecraft and open your instance's `mods` folder.
- If you are playing Minecraft 1.19.4 with `sodium-fabric-mc1.19.4-0.4.11+build.26.jar`, delete it and install **Sodium 0.4.10** (`sodium-fabric-mc1.19.4-0.4.10+build.24.jar`) alongside **Iris 1.6.3** (or newer for 1.19.4).
- If you also use **Indium**, downgrade or update it to the version built specifically for Sodium 0.4.10 so all three rendering mods match.
- On other Minecraft versions, check the changelog for your exact Iris file on Modrinth or CurseForge and install the exact Sodium version it requires.
| Loaders | Fabric |
|---|
| Severity | Stops the game |
|---|
| Category | Wrong Minecraft version |
|---|
Check your own log