Concurrent Chunk Management Engine - Forge

C2ME-Forge 0.2.0-forge.9.9.4 (Minecraft 1.20.1) - build 2026-10-28

Hotfix for forge.9.9.3. Everything else is the same as forge.9.9.3.

Fixed
• Arclight servers crashed at startup with C2ME installed: "Critical injection failure: Redirector arclight$safeIter ... failed injection check". Arclight and C2ME both change the spot where the server goes through the chunks whose loading state needs an update, and C2ME's change replaced that call, which left no room for Arclight's. C2ME now wraps the call instead, so both changes apply. Canary changes the same spot; its change was skipped until now and applies too. Every C2ME-Forge release for 1.20.1 had this crash with Arclight. Tested with Arclight 1.0.6: forge.9.9.3 crashed with the same error, forge.9.9.4 starts, generates, saves and loads its world again. Test worlds with Architectury and with Canary generate, save and reload without an error

Drop-in update. If your Arclight server would not start with C2ME, this is the fix.
Support: https://discord.gg/s7BYs6Njj5