Issue Description:

Ticking block entity crash

What happens:

When moving a mana pool from the overworld using a Blood Magic teleposer to a custom made dimension crashes the game.

What you expected to happen:

No crash

Testing done:

Overworld-->Dimension: Crash
Overworld-->Overworld: OK
Dimension-->Dimension: OK
End-->Overworld: OK

Steps to reproduce:

1. Put teleposers in both overworld and rftools dimension of your choice
2. align them with the foci, etc.. (mana pools do not need to be filled, and only one aligned foci is needed)
3. Don't forget to chunkload!
4. Pull the lever, kronk!
5. WRONG LEVERRRRRRRRRrrrrrr...
   ...

Logs:
Minecraft Log: https://gist.github.com/SunnyTD/bef6790257fb1a952029
Mod Loader Log: https://gist.github.com/SunnyTD/307eca413a0afa0c37e9

Affected Versions (Do not use "latest"):

• BloodMagic: 1.8.9.2.0.0-331-ss
  -Botania Unofficial: 1.8-299
  -RFTools: 4.24beta32
  -RFTools Dimensions: 4.22beta29
• Minecraft: 1.8.9
• Forge: 11.15.1.1764

Sounds like a case of "Don't do that".

Sure.