Minecraft 1.8.8 Command Block Issue

Put the summary of the bug you're having here

What I expected to happen was...:
I was creating a mural with bimbimma's mural generator.

What actually happened was...:
I pasted in the 2nd command into the command block, and when I selected Done, the game crashed.

Steps to Reproduce:
1. do /give @p minecraft:comm TAB
2. paste in the command in the attached document
3. press done