warningMod ErrorsAffects: Forge/NeoForge
How to Fix Access Transformer Errors
Fix Access Transformer Errors by re-downloading the mod and matching it to your Forge/NeoForge version.
Quick Fix
Re-download the mod and ensure it matches your Forge/NeoForge version exactly.
Error Message
Invalid access transformer entry / AT parse errorHow to Fix
1
Re-download the mod from the official source
2
Ensure Forge/NeoForge version matches what the mod expects
3
Try the latest build of the mod
4
Report to the mod author if the issue persists
Common Causes
- Mod compiled for different Minecraft mappings
- Forge version mismatch
- Corrupted mod file
Diagnostic Steps
- Delete the mod jar
- Re-download from CurseForge or Modrinth
- Verify Forge/NeoForge version
- Restart
FAQ
What is an Access Transformer?
A Forge feature that changes the access level (public/private) of Minecraft code at runtime. Errors mean the target code has changed.