Possible Fixes

Yes

Modpack Version

10-0.38

What happened?

Creating the supremium sword causes player data to fail to save and placing the sword into a chest causes the game to crash. the crash report says its because the sword has "-1 damage"

Crash Log

https://gist.github.com/ThatDemonPanda/1846b4061aac5d9cab92399cece4b01e

Latest.Log

No response

it might be all the supremum tier stuff, not just sword, i experienced the same thing with the paxel and the pickaxe. Suspect it might be tied to the "Unbreakable" trait.