Server start problem

[Corve]

Hello

I downloaded the lastest Serverpack for Tekkit. I'm starting my server, few seconds later it says this nice error and it stop to start the server. How can i fix it?

2012-08-04 15:08:28 [iNFO] CONFLICT @ -15 item slot already occupied by net.minecraft.server.ItemBlock@6c96f1cb while adding codechicken.enderstorage.ItemEnderChest@29dc7e1f

2012-08-04 15:08:28 [FINER] Initializing mod_NotEnoughItems

2012-08-04 15:08:28 [iNFO] CONFLICT @ -204 item slot already occupied by net.minecraft.server.ItemWithAuxData@5792bb80 while adding net.minecraft.server.ItemMobSpawner@6253fd6a

2012-08-04 15:08:28 [FINER] Initializing mod_BuildCraftEnergy

2012-08-04 15:08:28 [FINER] Initializing mod_BuildCraftCore

2012-08-04 15:08:28 [FINER] Initializing mod_IC2

2012-08-04 15:08:28 [iNFO] [iC2] Config loaded from /home/Minecraft/./config/IC2.cfg

2012-08-04 15:08:29 [sEVERE] java.lang.IllegalArgumentException: Slot 241 is already occupied by codechicken.enderstorage.BlockEnderChest@4490bc23 when adding ic2.common.BlockRubSapling@7a2fc0ff

2012-08-04 15:08:29 [sEVERE]at net.minecraft.server.Block.<init>(Block.java:181)

2012-08-04 15:08:29 [sEVERE]at net.minecraft.server.BlockFlower.<init>(SourceFile:11)

2012-08-04 15:08:29 [sEVERE]at net.minecraft.server.BlockFlower.<init>(SourceFile:19)

2012-08-04 15:08:29 [sEVERE]at net.minecraft.server.BlockSapling.<init>(BlockSapling.java:18)

2012-08-04 15:08:29 [sEVERE]at ic2.common.BlockRubSapling.<init>(BlockRubSapling.java:14)

2012-08-04 15:08:29 [sEVERE]at net.minecraft.server.mod_IC2.load(mod_IC2.java:289)

2012-08-04 15:08:29 [sEVERE]at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:351)

2012-08-04 15:08:29 [sEVERE]at cpw.mods.fml.common.Loader.modInit(Loader.java:263)

2012-08-04 15:08:29 [sEVERE]at cpw.mods.fml.common.Loader.initializeMods(Loader.java:618)

2012-08-04 15:08:29 [sEVERE]at cpw.mods.fml.server.FMLBukkitHandler.onLoadComplete(FMLBukkitHandler.java:142)

2012-08-04 15:08:29 [sEVERE]at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:176)

2012-08-04 15:08:29 [sEVERE]at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

2012-08-04 15:08:29 [sEVERE]at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

2012-08-04 15:08:29 [sEVERE] Unexpected exception

java.lang.IllegalArgumentException: Slot 241 is already occupied by codechicken.enderstorage.BlockEnderChest@4490bc23 when adding ic2.common.BlockRubSapling@7a2fc0ff

at net.minecraft.server.Block.<init>(Block.java:181)

at net.minecraft.server.BlockFlower.<init>(SourceFile:11)

at net.minecraft.server.BlockFlower.<init>(SourceFile:19)

at net.minecraft.server.BlockSapling.<init>(BlockSapling.java:18)

at ic2.common.BlockRubSapling.<init>(BlockRubSapling.java:14)

at net.minecraft.server.mod_IC2.load(mod_IC2.java:289)

at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:351)

at cpw.mods.fml.common.Loader.modInit(Loader.java:263)

at cpw.mods.fml.common.Loader.initializeMods(Loader.java:618)

at cpw.mods.fml.server.FMLBukkitHandler.onLoadComplete(FMLBukkitHandler.java:142)

at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:176)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)