hi, I got the same problem don't know how to fix it and would like help.
Here is the crash report:
---- Minecraft Crash Report ----
WARNING: coremods are present:
CoFH Loading Plugin (CoFHCore-1.10.2-4.1.11.16-universal (1).jar)
EnderCorePlugin (EnderCore-1.10.2-0.4.1.66-beta (5).jar)
CCLCorePlugin (CodeChickenLib-1.10.2-2.5.9.267-universal.jar)
SFRCore (SolarFluxReborn_1.10.2-2.16r.jar)
Contact their authors BEFORE contacting forge
// I'm sorry, Dave.
Time: 02/08/17 11:20 AM
Description: Exception in server tick loop
java.lang.NoClassDefFoundError: codechicken/core/ServerUtils
at codechicken.enderstorage.network.TankSynchroniser.onWorldUnload(TankSynchroniser.java:279)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_118_TankSynchroniser_onWorldUnload_Unload.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:185)
at net.minecraftforge.common.DimensionManager.unloadWorlds(DimensionManager.java:313)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:730)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:149)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: codechicken.core.ServerUtils
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 10 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 12 more
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- System Details --
Details:
Minecraft Version: 1.10.2
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_92, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 400030536 bytes (381 MB) / 1018425344 bytes (971 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.32 Powered by Forge 12.18.3.2297 24 mods loaded, 24 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAAAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.10.2-12.18.3.2297.jar)
UCHIJAAAA Forge{12.18.3.2297} [Minecraft Forge] (forge-1.10.2-12.18.3.2297.jar)
UCHIJAAAA <CoFH ASM>{000} [CoFH ASM] (minecraft.jar)
UCHIJAAAA ccl-entityhook{1.0} [ccl-entityhook] (CodeChickenLib-1.10.2-2.5.9.267-universal.jar)
UCHIJAAAA mercurius_updater{1.0} [mercurius_updater] (MercuriusUpdater-1.10.2.jar)
UCHIJAAAA infinitylib{1.10.2-0.10.0} [InfinityLib] (infinitylib-0.10.0.jar)
UCHIJAAAA agricraft{2.0.0-0.10.0-a19} [AgriCraft] (agricraft-2.0.0-0.10.0-a19 (1).jar)
UCHIJAAAA CodeChickenLib{2.5.9.267} [CodeChicken Lib] (CodeChickenLib-1.10.2-2.5.9.267-universal.jar)
UCHIJAAAA CodeChickenCore{2.4.1.102} [CodeChicken Core] (CodeChickenCore-1.10.2-2.4.1.102-universal (1).jar)
UCHIJAAAA ChickenChunks{2.2.0.52} [ChickenChunks] (ChickenChunks-1.10.2-2.2.0.52-universal (1).jar)
UCHIJAAAA cofhcore{4.1.11} [CoFH Core] (CoFHCore-1.10.2-4.1.11.16-universal (1).jar)
UCHIJAAAA endercore{1.10.2-0.4.1.66-beta} [EnderCore] (EnderCore-1.10.2-0.4.1.66-beta (5).jar)
UCHIJAAAA EnderIO{1.10.2-3.1.183} [Ender IO] (EnderIO-1.10.2-3.1.183 (1).jar)
UCHIJAAAA EnderStorage{2.1.5.80} [EnderStorage] (EnderStorage-1.10.2-2.1.5.80-universal (2).jar)
UCHIJAAAA extrautils2{1.0} [Extra Utilities 2] (extrautils2-1.10.2-1.3.0 (1).jar)
UCHIJAAAA hammercore{1.4.8} [Hammer Core] (HammerCore_1.10.2-1.4.8.jar)
UCHIJAAAA mantle{1.10.2-1.1.5.205} [Mantle] (Mantle-1.10.2-1.1.5.jar)
UCHIJAAAA ProjectE{1.10.2-PE1.3.0} [ProjectE] (ProjectE-1.10.2-PE1.3.0 (1).jar)
UCHIJAAAA reborncore{2.5.5.3} [RebornCore] (RebornCore-1.10.2-2.5.5.3-universal (1).jar)
UCHIJAAAA quantumstorage{3.3.4} [QuantumStorage] (QuantumStorage-1.10.2-3.3.4.jar)
UCHIJAAAA reborncore-mcmultipart{2.5.5.3} [reborncore-MCMultiPart] (RebornCore-1.10.2-2.5.5.3-universal (1).jar)
UCHIJAAAA solarfluxreborn{2.16r} [Solar Flux Reborn] (SolarFluxReborn_1.10.2-2.16r.jar)
UCHIJAAAA worldedit{6.1.4} [WorldEdit] (worldedit-forge-mc1.10.2-6.1.4-dist (1).jar)
Loaded coremods (and transformers):
CoFH Loading Plugin (CoFHCore-1.10.2-4.1.11.16-universal (1).jar)
cofh.asm.CoFHClassTransformer
cofh.asm.repack.codechicken.lib.asm.ClassHierarchyManager
EnderCorePlugin (EnderCore-1.10.2-0.4.1.66-beta (5).jar)
com.enderio.core.common.transform.EnderCoreTransformer
CCLCorePlugin (CodeChickenLib-1.10.2-2.5.9.267-universal.jar)
codechicken.lib.asm.ClassHeirachyManager
codechicken.lib.asm.CCL_ASMTransformer
SFRCore (SolarFluxReborn_1.10.2-2.16r.jar)
com.mrdimka.solarfluxreborn.core.SFRSerializedTransformer
GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
CodeChickenLib Invalid Fingerprint Reports:
EnderStorage has an invalid fingerprint.
CodeChickenCore Invalid Fingerprint Reports:
EnderStorage has an invalid fingerprint.
ChickenChunks Invalid Fingerprint Reports:
EnderStorage has an invalid fingerprint.
EnderIO: Found the following problem(s) with your installation (That does NOT mean that Ender IO caused the crash or was involved in it in any way. We add this information to help finding common problems, not as an invitation to post any crash you encounter to Ender IO's issue tracker. Always check the stack trace above to see which mod is most likely failing.):
* An unsupportted RF API is installed (1.7.0 from (guessing) jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/CoFHAPIProps.class).
Ender IO needs at least 1.4.0 and will NOT work with older versions.
This may (look up the meaning of 'may' in the dictionary if you're not sure what it means) have caused the error. Try reproducing the crash WITHOUT this/these mod(s) before reporting it.
Detailed RF API diagnostics:
* RF API class 'EnergyStorage' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/EnergyStorage.class
* RF API class 'IEnergyConnection' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/IEnergyConnection.class
* RF API class 'IEnergyContainerItem' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/IEnergyContainerItem.class
* RF API class 'IEnergyHandler' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/IEnergyHandler.class
* RF API class 'IEnergyProvider' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/IEnergyProvider.class
* RF API class 'IEnergyReceiver' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/IEnergyReceiver.class
* RF API class 'IEnergyStorage' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/IEnergyStorage.class
* RF API class 'ItemEnergyContainer' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/ItemEnergyContainer.class
* RF API class 'TileEnergyHandler' is loaded from: jar:file:/C:/Users/HGVuong1/AppData/Roaming/.minecraft/mods/CoFHCore-1.10.2-4.1.11.16-universal%20(1).jar!/cofh/api/energy/TileEnergyHandler.class
Detailed Tesla API diagnostics:
* Tesla API class 'Tesla' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.Tesla)
* Tesla API class 'TeslaCapabilities' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.capability.TeslaCapabilities)
* Tesla API class 'ITeslaConsumer' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.ITeslaConsumer)
* Tesla API class 'ITeslaHolder' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.ITeslaHolder)
* Tesla API class 'ITeslaProducer' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.ITeslaProducer)
* Tesla API class 'BaseTeslaContainer' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.implementation.BaseTeslaContainer)
* Tesla API class 'BaseTeslaContainerProvider' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.implementation.BaseTeslaContainerProvider)
* Tesla API class 'InfiniteTeslaConsumer' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.implementation.InfiniteTeslaConsumer)
* Tesla API class 'InfiniteTeslaConsumerProvider' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.implementation.InfiniteTeslaConsumerProvider)
* Tesla API class 'InfiniteTeslaProducer' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.implementation.InfiniteTeslaProducer)
* Tesla API class 'InfiniteTeslaProducerProvider' could not be loaded (reason: java.lang.ClassNotFoundException: net.darkhax.tesla.api.implementation.InfiniteTeslaProducerProvider)
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!!!You are looking at the diagnostics information, not at the crash. Scroll up!!!
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Profiler Position: N/A (disabled)
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'