Describe the bug
As I was away from my computer at the time of this crash, I'm unsure as to what caused the crash. But I do have a Lumberjack from Minecolonies that was going around chopping trees down. There were Dynamic Spruce trees around that I assume he was trying to chop down. There were also Acacia, Orange Autumn Oak, Red Autumn Oak, and Autumn Yellow Birch trees around.

To Reproduce
(Tentative) Steps to reproduce the behavior:

1. Hire a lumberjack
2. Have him cut down dynamic trees.

Rendering Glitches
Are you using Optifine? Yes

Crashes

• Crash Log
• DT v0.9.5
• DT BOP v1.4.1e
• DT Traverse v1.5
• DT Climatic Biomes v1.3.0
• Minecolonies v0.10.334-Alpha

Known crash when a non-player entity breaks a branch.

This is fixed.