Bonsai Trees version: 1.1.3-b156
CraftTweaker version: 8.1.9
Forge version: 14.23.5.2838
Optifine?: Yes
Link to Crashlog: here

Description of the problem including expected versus actual behavior:
I ran the command /bonsaitrees reloadTrees but then received the above crash instead of it reloading the new tree file shape I had created. It seems to be related to CraftTweaker.

Steps to reproduce:

1. Create a new tree shape
2. Run the command /bonsaitrees reloadTrees