I'm playing Modern Skyblock 3 and upgraded to 3.1.5.2. Within this version, it has Chisel to 1.12-0.2.0.30 & CTM 1.12-0.2.3.12. I'm tried Java 1.8.0_25 (not sure why Native Launcher defaults to this yet) and tried Java 1.8.0_161.

Moments after placing the auto-chisel down and configuring it, it crashes the game. Here is the crash report - https://pastebin.com/6m9yfaJz.

What is weird is that - When placing the block down, it doesn't crash. When configuring the block, it doesn't crash. When destroying the block, it won't crash. It is a few minutes after it has ran that it'll crash (doesn't matter if the block is still placed down or not).