I'm trying to set up a server with IC2 1.23, BC 2.2.5, Power Converters 1.2.3 and zAdditional Pipes.
But EVERY time i try to use anything from IC2, like the ironfurnace etc. my server crashes.. I have added the serverlog below.. 
Display Spoiler
161 recipes
17 achievements
ModLoader Server Beta 1.8.1 Initializing...
2011-11-20 17:33:22 [INFO] ModLoader Server Beta 1.8.1 Initializing...
Mod Loaded: mod_BuildCraftCore 2.2.5
2011-11-20 17:33:22 [INFO] Mod Loaded: mod_BuildCraftCore 2.2.5
Mod Loaded: mod_BuildCraftBuilders 2.2.5
2011-11-20 17:33:22 [INFO] Mod Loaded: mod_BuildCraftBuilders 2.2.5
Mod Loaded: mod_BuildCraftEnergy 2.2.5
2011-11-20 17:33:22 [INFO] Mod Loaded: mod_BuildCraftEnergy 2.2.5
Mod Loaded: mod_BuildCraftFactory 2.2.5
2011-11-20 17:33:22 [INFO] Mod Loaded: mod_BuildCraftFactory 2.2.5
Mod Loaded: mod_BuildCraftTransport 2.2.5
2011-11-20 17:33:22 [INFO] Mod Loaded: mod_BuildCraftTransport 2.2.5
MinecraftForge V1.1.2 Initialized
2011-11-20 17:33:22 [INFO] ModLoaderMP Beta 1.8.1 Initialized
ModLoaderMP Beta 1.8.1 Initialized
Mod Loaded: mod_IC2 v1.23
2011-11-20 17:33:22 [INFO] Mod Loaded: mod_IC2 v1.23
Mod Loaded: mod_PowerConverters 1.8.1R1.2.3
2011-11-20 17:33:22 [INFO] Mod Loaded: mod_PowerConverters 1.8.1R1.2.3
Mod Loaded: mod_zAdditionalPipes Rev27
2011-11-20 17:33:22 [INFO] Mod Loaded: mod_zAdditionalPipes Rev27
Done.
Starting BuildCraft 2.2.5
Copyright (c) SpaceToad, 2011
http://www.mod-buildcraft.com
2011-11-20 17:33:22 [INFO] Starting minecraft server version Beta 1.8.1
2011-11-20 17:33:22 [INFO] Loading properties
2011-11-20 17:33:22 [INFO] Starting Minecraft server on *:25565
2011-11-20 17:33:22 [INFO] Preparing level "world"
2011-11-20 17:33:22 [INFO] Default game type: 0
2011-11-20 17:33:22 [INFO] Preparing start region for level 0
2011-11-20 17:33:22 [INFO] Preparing start region for level 1
2011-11-20 17:33:23 [INFO] Preparing spawn area: 97%
2011-11-20 17:33:23 [INFO] Done (1049320239ns)! For help, type "help" or "?"
op kamds
2011-11-20 17:33:25 [INFO] CONSOLE: Opping kamds
2011-11-20 17:33:38 [INFO] Kamds [/127.0.0.1:53921] logged in with entity id 244
at (335.5625, 19.0, -164.53125)
New max size: 484
New max size: 784
2011-11-20 17:33:39 [INFO] Kamds joined with mod_BuildCraftCore 2.2.5, mod_Build
CraftBuilders 2.2.5, mod_BuildCraftEnergy 2.2.5, mod_BuildCraftFactory 2.2.5, mo
d_BuildCraftTransport 2.2.5, mod_IC2 v1.23, mod_PowerConverters 1.8.1R1.2.3, mod
_zAdditionalPipes Rev27
Kamds joined with mod_BuildCraftCore 2.2.5, mod_BuildCraftBuilders 2.2.5, mod_Bu
ildCraftEnergy 2.2.5, mod_BuildCraftFactory 2.2.5, mod_BuildCraftTransport 2.2.5
, mod_IC2 v1.23, mod_PowerConverters 1.8.1R1.2.3, mod_zAdditionalPipes Rev27
java.lang.NoSuchMethodError: ic2.common.ContainerIC2.a(Lhm;IIZ)Z
at ic2.common.ContainerIC2.transferToSlots(ContainerIC2.java:108)
at ic2.common.ContainerIC2.a(ContainerIC2.java:61)
at df.a(SourceFile:108)
at iw.a(NetServerHandler.java:603)
at my.a(SourceFile:28)
at ma.b(SourceFile:272)
at iw.a(NetServerHandler.java:45)
at dr.a(SourceFile:108)
at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:369)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:287)
at ce.run(SourceFile:417)
2011-11-20 17:33:41 [SEVERE] Unexpected exception
java.lang.NoSuchMethodError: ic2.common.ContainerIC2.a(Lhm;IIZ)Z
at ic2.common.ContainerIC2.transferToSlots(ContainerIC2.java:108)
at ic2.common.ContainerIC2.a(ContainerIC2.java:61)
at df.a(SourceFile:108)
at iw.a(NetServerHandler.java:603)
at my.a(SourceFile:28)
at ma.b(SourceFile:272)
at iw.a(NetServerHandler.java:45)
at dr.a(SourceFile:108)
at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:369)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:287)
at ce.run(SourceFile:417)