I have got an error message, when I placed Adjustable emitter to test something...
---- Minecraft Crash Report ----
// I let you down. Sorry 
Time: 4/19/14 3:34 AM
Description: Exception in server tick loop
java.lang.AbstractMethodError
at ic2.core.energy.Grid.prepareCalculation(Grid.java:201)
at ic2.core.energy.EnergyNetLocal.onTickEnd(EnergyNetLocal.java:264)
at ic2.core.energy.EnergyNetGlobal.onTickEnd(EnergyNetGlobal.java:51)
at ic2.core.IC2.tickEnd(IC2.java:1793)
at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:34)
at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:141)
at cpw.mods.fml.common.FMLCommonHandler.onPostWorldTick(FMLCommonHandler.java:282)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:892)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:330)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:777)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:659)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
Minecraft Version: 1.6.4
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1253067040 bytes (1195 MB) / 1656225792 bytes (1579 MB) up to 3817865216 bytes (3641 MB)
JVM Flags: 2 total; -Xms128M -Xmx4096M
AABB Pool Size: 406 (22736 bytes; 0 MB) allocated, 406 (22736 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 1, tcache: 0, allocated: 2, tallocated: 64
CraftBukkit Information:
Running: MCPC+ version git-MCPC-Plus-jenkins-MCPC-Plus-164-251 (MC: 1.6.4) (Implementing API version 1.6.4-R2.1-SNAPSHOT) false
...
IC2{2.0.397-experimental} [IndustrialCraft 2] (industrialcraft-2_2.0.397-experimental.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
...