Issue Description:

Note: If this bug occurs in a modpack, please report this to the modpack author. Otherwise, delete this line and add your description here. If this is a feature request, this template does not apply to you. Just delete everything.

What happens:

Was coming back to my house with an altar with node routers (master, input , output) with precise filters in them and the server crashed.

What you expected to happen:

Not crashing

Steps to reproduce:

1. get blood altar lvl 4
2. put input node at the left master node at north and output node at east
3. output filter on west configured to get 1 stone, and on east configured to get blank slate reinfoced and demonic.
   ...

here is the server crash : http://pastebin.com/iVWRwgUv

Affected Versions (Do not use "latest"):

• BloodMagic: bloodmagic{1.11-2.1.5-74)
• Minecraft: 1.11.2
• Forge: 2252