latest.log
When adding a recipe for the Empowerer the game crashes. I looked here how to add them:

https://crafttweaker.readthedocs.io/en/latest/#Mods/Modtweaker/ActuallyAdditions/Empowerer/

It works when leaving the "ParticleColourArray" parameter out, but with one the game crashes.
To reproduce the crash you just need to add a "ParticleColourArray" parameter in the the edited recipe.

• Minecraft: 1.12.2
• Forge: 1.12.2-14.23.4.2745
• Crafttweaker: 1.12-4.1.11
• ModTweaker: 4.0.15
• MTLib: 3.0.5

https://pastebin.com/KfzkYzXF (Zen-Script)
https://pastebin.com/70EpKGe0 (Minetweaker-Log)

The log-file is too large for the free version of pastebin to process. And I believe that posting it raw is better than not posting it or posting it in parts.

Upload it to gist.

Actually don't bother. The colour array is for RGB, you need 3 values as shown in the wiki example.

Thank you for your quick response.
The funny thing is, that I originally tried it with 3 values and it crashed.
It seems that the values cannot be separated like this [0.5, 0.3, 0.2] but rather be close together like this.
[0.5,0.3,0.2].