Mekanism Stack Processor 1.2.1 for Minecraft 1.21.1 (NeoForge)

ReleaseFebruary 10, 2026Minecraft 1.21.1NeoForge331 downloads on Modrinth

This isn't the latest version. The latest for 1.21.1 · NeoForge is 1.3.0Open 1.3.0 →

Files · 1

mekanismstackprocessor-1.2.1.jarPrimary38.3 KBDownload

Primary · 38.3 KB

SHA-1cef29e914ea81c97dc8a092a8fb8c08ce9481056SHA-512

af6b6ba19f9d5a60188adc9fa6e8faeaf01ff3b2ee8eb637bfd002ed6178b1358fd60c724acd3ae7b6d08dd8e29ca05ef2be5a32174960948e88752bf5df25f7

Fixed crash on startup with 300+ mods caused by premature BlockEntity class loading
- Replaced Class.forName() with ClassLoader.getResource() in MoreMachineMixinPlugin to avoid cascading class hierarchy resolution
- Resolves incompatibility with Collective, Data Anchor, EntityCulling, Sodium, and other mods that add BlockEntity mixins
Added mixin config priority (1500) to both mixin JSON configs for additional safety