error not allowing server to start up

[butwanna]

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

2012-08-09 03:06:47 [sEVERE]at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:176)

2012-08-09 03:06:47 [sEVERE]at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

2012-08-09 03:06:47 [sEVERE]at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

2012-08-09 03:06:47 [sEVERE] Unexpected exception

java.lang.IllegalArgumentException: Slot 216 is already occupied by eloraam.machine.BlockMachinePanel@6f68ad51 when adding dan200.turtle.shared.BlockTurtle@414ad9fb

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

at net.minecraft.server.BlockContainer.<init>(BlockContainer.java:6)

at dan200.computer.shared.BlockComputerBase.<init>(BlockComputerBase.java:24)

at dan200.turtle.shared.BlockTurtle.<init>(BlockTurtle.java:24)

at net.minecraft.server.mod_CCTurtle.modsLoaded(mod_CCTurtle.java:44)

at cpw.mods.fml.common.modloader.ModLoaderModContainer.postInit(ModLoaderModContainer.java:357)

at cpw.mods.fml.common.Loader.postModInit(Loader.java:280)

at cpw.mods.fml.common.Loader.initializeMods(Loader.java:619)

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)

[butwanna]

tried to allow quarries on my server and messed something up now server wont when i started it on a differnt file everything was there but all the buildcraft stuff was gone how can i get everything i built back???