Error in modpack. Someone help?

[RuneyIC]

So I've been trying to make a modpack myself, but there is always something wrong. First I had problems with a certain mod 'Ironchests' so i decided not to use it for now. Now though, i have problems with loading my a coremod "powercrystals". The error file is here:

http://pastebin.com/cPcPNYSk

If anyone could help me with creating my modpack, I would be very grateful. I feel like I will keep encountering problems the way I am trying now.

Thanks in advance, RuneyIC