---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 18. 6. 13 오전 10:55
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiScreen
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at cpw.mods.fml.common.Loader.identifyMods(Loader.java:340)
    at cpw.mods.fml.common.Loader.loadMods(Loader.java:489)
    at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:87)
    at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:320)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:176)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:631)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.gui.GuiScreen
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 9 more
Caused by: java.lang.RuntimeException: Attempted to load class bdw for invalid side SERVER
    at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:51)
    at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
    ... 11 more

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
    Minecraft Version: 1.7.10
    KCauldron Version: pw.prok:KCauldron:1.7.10-1614.201 Official
    Plugins: ~~ERROR~~ NullPointerException: null
    Disabled Plugins: ~~ERROR~~ NullPointerException: null
    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: 942964744 bytes (899 MB) / 1029701632 bytes (982 MB) up to 1029701632 bytes (982 MB)
    JVM Flags: 2 total; -Xms1G -Xmx1G
    AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 4 mods loaded, 0 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
        mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) 
        FML{7.10.99.99} [Forge Mod Loader] (KCauldron-1.7.10-1614.201.jar)
        Forge{10.13.4.1614} [Minecraft Forge] (KCauldron-1.7.10-1614.201.jar) 
        kimagine{0.2} [KImagine] (minecraft.jar) 
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'kcauldron,cauldron,craftbukkit,mcpc,fml,forge'
    Type: Dedicated Server (map_server.txt)