I had the exact same issue i was running the following
Forge 3.3.8.164
mystcraft-server-1.2.5-0.8.6b-Forge-3.3.7.135
CodeChickenCore-Server 0.5.5
NotEnoughItems-Server 1.3.zip
industrialcraft-2-server_1.97.jar
RedPower Server-2.0pr5b2
I had enery net messages in the log and the generator and macerator textures were facing the wrong way and were rotated.
i down graded my NEI and Codechicken core and this resolved the issue.
im now running
CodeChickenCore-Server 0.5.3.zip
NotEnoughItems-Server 1.2.2.3.zip
and everything is facing the right way and everything is getting power.