UniMixins Mod Wiki › FAQ
UniMixins Mod FAQ
10 questions players actually ask, answered.
How do I know if UniMixins is actually loading?
Check your game log for UniMixins startup messages during launch, which appear before the main mod list loads. If you see mixin-related errors referencing UniMixins, it is loading but something else is wrong.
Do I need the combined jar or the separate modules?
The combined jar is the simplest option and works for most players. Use separate modules only if you want to run UniMixins alongside another mixin loader and need to avoid feature overlap.
Why does my game crash when I add UniMixins next to another mixin loader?
Two loaders providing the same extra feature will conflict, causing a crash during mixin application. Disable the overlapping module in UniMixins or remove the other loader's equivalent feature.
How do I run UniMixins with another 1.7.10 mixin loader?
Install only the specific UniMixins modules that the other loader does not already provide. Keep the combined jar out of your mods folder in this setup, since it bundles everything.
Which UniMixins modules do I actually need?
Start with the base mixin module, then add extras only when another mod explicitly requires them. If nothing requires a specific extra, leaving it out reduces the chance of conflicts.
Does UniMixins work on 1.8.9 through 1.12.2?
Support for those versions is partial, so some modules may not function or may behave differently than on 1.7.10. Test with your specific modpack before relying on it there.
Can I remove UniMixins if a mod stops needing it?
Yes, but any mod that depends on a UniMixins module will fail to load or crash without it. Check your mods' dependencies before removing it.
Why do some mixins from other mods stop working after installing UniMixins?
This usually means a feature overlap where UniMixins handles the same mixin target differently. Try disabling the relevant UniMixins module or check the log for which loader claimed the mixin first.
Does UniMixins hurt performance?
Mixin loading adds a small startup cost, but runtime performance impact is generally negligible. Extra modules you do not need can add unnecessary overhead, so keep only what is required.
How do I fix a crash that mentions overlapping mixin features?
Identify which two loaders or modules are providing the same feature from the crash log, then remove or disable one of them. Running only the base module alongside another loader often resolves it.