Observed Behaviour
I made a tempered javelin in creative mode, i put down a target dummy from MmmMmmMmmMmm mod.
When javelin hit the training dummy, game crashed.

Crash log:
https://paste.ee/p/rrCB8

Expected Behaviour
lack of crash

Minimal setup needed to reproduce

• Tetra version: 3.10.0 for 1.16.5
• Forge version: 36.1.3
• Tetra configuration: factory defaults
• Other mods: farmer's delight registers some asm stuff for its knives. others (listed in crash log) shouldn't matter

Steps to reproduce
Make a javelin in creative mode. Have the head tempered.
Tempering it causes the crash. I remade the spearhead on the same tool and it doesn't crash if i do not upgrade the spearhead.

This needs to be updated to include all fields in the bug report template

double checked. it's just a target dummy.
maybe it's on their end...

updated.

Good job 👍

Tempering it causes the crash.

Is it when you temper it that it crashes? Or is it when you hit a target dummy as you described before? Does this only occur for the target dummies in your instance, or does it happen regardless of what you're hitting?

They might be calling some stuff that they shouldn't but I should also fix the application of the penetration effect on my side so this can't happen 😅

Fixed in 3.12.0.