不知道是不是其他MOD冲突，还是服务器系统编码问题？
下面是错误报告：

---- Minecraft Crash Report ----
// Oops.

Time: 11/21/15 12:14 PM
Description: Exception in server tick loop

cpw.mods.fml.common.LoaderException: java.lang.ClassNotFoundException: cn.academy.core.AcademyCraft
at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:544)
at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:87)
at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:319)
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(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: cn.academy.core.AcademyCraft
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at cpw.mods.fml.common.ModClassLoader.loadClass(ModClassLoader.java:58)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:278)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:440)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:513)
... 5 more
Caused by: java.lang.UnsupportedClassVersionError: cn/academy/core/AcademyCraft : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 33 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:1.7.10-1492.152
Operating System: Linux (amd64) version 3.11.0-26-generic
Java Version: 1.7.0_80, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 262505320 bytes (250 MB) / 1026031616 bytes (978 MB) up to 2364014592 bytes (2254 MB)
JVM Flags: 3 total; -Xms64M -Xmx2536M -XX:MaxPermSize=256m
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 10.13.4.1492 65 mods loaded, 65 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC mcp{9.05} Minecraft Coder Pack
UC FML{7.10.99.99} Forge Mod Loader
UC Forge{10.13.4.1492} Minecraft Forge
UC kimagine{0.1} KImagine
UC AppleMilkCore{1.1.0} AppleMilkCore
UC appliedenergistics2-core{rv2-stable-10} AppliedEnergistics2 Core
UC CodeChickenCore{1.0.7.47} CodeChicken Core
UC AnnoReg{1.0} LambdaLib|Annotation Registry
UC NotEnoughItems{1.0.5.118} Not Enough Items
UC PotionExtensionCore{1.7.10-1.1.0} PotionExtensionCore
UC technomCore{0.12.0A} Technomancy Core
UC ThaumicTinkerer-preloader{0.1} Thaumic Tinkerer Core
UC WitchingGadgetsCore{1.1.9} Witching Gadgets Core
UC mod_ecru_MapleTree{1.1.32c} [MapleTree](%5B1.7.10%5DMapleTree Forge v1.1.32c.jar)
UC LIUtils{1.0} LambdaLib|LIUtils
UE academy-craft{1.0pr2_1} Academy Craft
UC DCsAppleMilk{1.7.10_2.8k} Apple&Milk&Tea!
UC DCsNEIPluginAMT{1.7.10_1.0a} NEIPluginForAMT
UC appliedenergistics2{rv2-stable-10} Applied Energistics 2
UC Baubles{1.0.1.10} Baubles
UC Thaumcraft{4.2.3.5} Thaumcraft
UC Automagy{0.26.3} Automagy
UC BambooMod{Minecraft@MC_VERSION@ var@VERSION@} BambooMod
UC betterrecords{1.7.10-1.1.9} Better Records
UC BiblioCraft{1.11.2} BiblioCraft
UC BiomesOPlenty{2.1.0} Biomes O' Plenty
UC AWWayofTime{v1.3.3} Blood Magic: Alchemical Wizardry
UC Botania{r1.7-235} [Botania](Botania r1.7-235.jar)
UC BuildCraft|Core{7.1.12} BuildCraft
UC BuildCraft|Builders{7.1.12} BC Builders
UC BuildCraft|Transport{7.1.12} BC Transport
UC BuildCraft|Energy{7.1.12} BC Energy
UC BuildCraft|Silicon{7.1.12} BC Silicon
UC BuildCraft|Robotics{7.1.12} BC Robotics
UC BuildCraft|Factory{7.1.12} BC Factory
UC DummyCore{1.13} DummyCore
UC IC2{2.2.791-experimental} IndustrialCraft 2
UC ThaumicTinkerer{unspecified} Thaumic Tinkerer
UC ForbiddenMagic{1.7.10-0.57} [Forbidden Magic](Forbidden Magic-1.7.10-0.57.jar)
UC Forestry{4.0.11.40} Forestry for Minecraft
UC guideapi{1.7.10-1.0.1-20} Guide-API
UC InfusionBrewing{1.7.10-1.3} InfusionBrewing
UC Railcraft{9.8.0.0} Railcraft
UC MagicBees{1.7.10-2.4.0} Magic Bees
UC MagicCookie{1.0.7.1} Magic Cookies, something yummy
UC NEIAddons{1.12.14.40} NEI Addons
UC NEIAddons|Developer{1.12.14.40} NEI Addons: Developer Tools
UC NEIAddons|AppEng{1.12.14.40} NEI Addons: Applied Energistics 2
UC NEIAddons|Botany{1.12.14.40} NEI Addons: Botany
UC NEIAddons|Forestry{1.12.14.40} NEI Addons: Forestry
UC NEIAddons|CraftingTables{1.12.14.40} NEI Addons: Crafting Tables
UC NEIAddons|ExNihilo{1.12.14.40} NEI Addons: Ex Nihilo
UC recipemod{0.2} NoMoreRecipeConflict
UC PowerConverters{1.7.10_3.2.1} Power Converters
UC TaintedMagic{1.1.5.7} Tainted Magic
UC thaumicbases{1.3.1710.2} Thaumic Bases
UC thaumicenergistics{0.8.10.10} Thaumic Energistics
UC ThaumicHorizons{1.1.5} Thaumic Horizons
UC thaumicinfusion{4.27} Thaumic Infusion
UC TravellersGear{1.16.4} Traveller's Gear
UC TwilightForest{2.3.7} The Twilight Forest
UC WitchingGadgets{1.1.9} Witching Gadgets
UC hearts{1.0} Hearts
UC AdvancedSolarPanel{1.7.10-3.5.1} Advanced Solar Panels
UC technom{0.12.0A} [Technomancy](Technomancy - 0.12.1C - 1.7.10.jar)
AE2 Version: stable rv2-stable-10 for Forge 10.13.2.1291
Profiler Position: N/A (disabled)
Is Modded: Definitely; Server brand changed to 'kcauldron,cauldron,craftbukkit,mcpc,fml,forge'
Type: Dedicated Server (map_server.txt)

请使用Java8.

#165