Update 1.0.20 - lootbag opener crashes game

[HiFiSi]

Bug Report

When running the latest update (1.0.20) if you run lootbags through a lootbag opener the game crashes.

Steps to Reproduce (for bugs)

1. Put lootbag in loot opener (not sure if it is all lootbags or only specific colors that cause the crashing, I had them all being piped in so I couldn't tell which was causing it)
2. Game crashes

Logs

• Client/Server Log:
• Crash Log: https://gist.github.com/HiFiSi/bcd7c1fb04fae0e21b6db939b5622cd5

Client Information

• Modpack Version: 1.0.20
• Server/LAN/Single Player: Single player
• Optifine Installed: no
• Shaders Enabled: no

[leonexis]

See #320