Sorry if this has already been answered, but I did look around a bit(Though not a completely thorough search). But...yeah, whenever I use my wrench on an IC2 machine, I get a crash. It was working before, so it was probably something I did/added, or something. Anyway, here's the crash file, or w/e it is.
---- Minecraft Crash Report ----
// Ooh. Shiny.
Time: 12/16/12 1:59 PM
Description: Exception in server tick loop
java.lang.NoSuchMethodError: ic2.api.IWrenchable.getWrenchDrop(Lqx;)Lum;
at ic2.common.ItemToolWrench.onItemUseFirst(ItemToolWrench.java:119)
at ir.a(ItemInWorldManager.java:386)
at iv.a(NetServerHandler.java:525)
at fl.a(SourceFile:58)
at cf.b(MemoryConnection.java:79)
at iv.d(NetServerHandler.java:82)
at iw.b(NetworkListenThread.java:55)
at bdr.b(IntegratedServerListenThread.java:111)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:696)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:592)
at bdo.q(IntegratedServer.java:110)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:499)
at fy.run(SourceFile:856)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- System Details --
Details:
Minecraft Version: 1.4.5
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_07, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 273887944 bytes (261 MB) / 615841792 bytes (587 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms256M -Xmx1024M
AABB Pool Size: 528 (29568 bytes; 0 MB) allocated, 443 (24808 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v7.23 FML v4.5.17.479 Minecraft Forge 6.4.1.425 Feed The Beast Mod Pack 36 mods loaded, 36 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_CodeChickenCore [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_NotEnoughItems [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Core [BuildCraft] (buildcraft-A-3.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Builders [BC Builders] (buildcraft-A-3.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Energy [BC Energy] (buildcraft-A-3.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Factory [BC Factory] (buildcraft-A-3.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Transport [BC Transport] (buildcraft-A-3.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BuildCraft|Silicon [BC Silicon] (buildcraft-A-3.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
EnderStorage [EnderStorage] (EnderStorage 1.3.0.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ExtraBees [Extra Bees] (extrabees-1.4.1.29-dev-build.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BinnieCore [Binnie Core] (extrabees-1.4.1.29-dev-build.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ExtrabiomesXL [ExtrabiomesXL] (ExtrabiomesXL-universal-1.4.5-3.6.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forestry [Forestry for Minecraft] (forestry-A-1.6.2.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ForgeIRC [ForgeIRC] (ForgeIRC-v1.0.13.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
IC2 [IndustrialCraft 2] (industrialcraft-2_1.110.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_InvTweaks [Inventory Tweaks] (InvTweaks-1.45.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
IronChest [Iron Chest] (ironchest-universal-4.4.0.191.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
AdvancedSolarPanel [Advanced Solar Panels] (mod_AdvancedSolarPanels_3_3_0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Mystcraft [Mystcraft] (Mystcraft-0.9.4.05.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
NEIPlugins [NEI Plugins] (NEIPlugins-1.0.3.6.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ObsidiPlates [Obsidian Pressure Plates] (Obsidiplates-1.1.0.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
OmniTools [OmniTools] (OmniTools-2.2.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Railcraft [Railcraft] (Railcraft_1.4.5b-6.10.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_ReiMinimap [mod_ReiMinimap] (ReiMinimap_v3.2_05.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
SoulShards [Soul Shards] (SoulShards-v1.11-universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
StevesCarts [Steve's Carts] (StevesCarts2.0.0.a35.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Thaumcraft [Thaumcraft] (Thaumcraft3.0.0i.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ThermalExpansion [Thermal Expansion] (ThermalExpansion-2.1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ThermalExpansion|Factory [Factory] (ThermalExpansion-2.1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ThermalExpansion|Energy [Energy] (ThermalExpansion-2.1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ThermalExpansion|NEI [NEI] (ThermalExpansion-2.1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ThermalExpansion|Transport [Transport] (ThermalExpansion-2.1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
TwilightForest [The Twilight Forest] (twilightforest-1.13.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 98 (5488 bytes; 0 MB) allocated, 58 (3248 bytes; 0 MB) used
Player Count: 1 / 8; [iq['Maurauder21'/40, l='Test', x=693.26, y=4.00, z=-279.32]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'forge,fml'