Modpack crashing

[Phoenfox]

Hi, my modpack keeps crashing back to the launcher and I cannot figure out why. I know it is due to Ars Magica 2 but I don't know why. It isn't an ID conflict. Here is my crash log: http://pastebin.com/184Z5znF

Edited October 6, 2014 by Phoenfox

[EvilOwl]

For starters update java

Java Version: 1.6.0_20, Sun Microsystems Inc.

and check memory settings

 Vec3 Pool Size: ~~ERROR~~ NullPointerException: null