Hello, i've done my modpack for Minecraft 1.10.2 with this three mods - Tinker's Construct, EnderIO and ImmersiveEngineering. Also i have subsidiary mods like InventoryTweaks, Just Enough Items, Just Enough Resources, TreeChopper. And some addons for Tinker's Construct (TinkerToolLeveling), EnderIOAddons. Forge's versions is the last.
So i started the modpack, created new world, took Stirling Generator and Minecraft crashed. Can you help me with this problem? Thank you.
Here it is crash report.

---- Minecraft Crash Report ----

WARNING: coremods are present:
EnderCorePlugin (EnderCore-1.10.2-0.4.1.58-beta.jar)
FMLPlugin (InventoryTweaks-1.62-dev-66.jar)
Contact their authors BEFORE contacting forge

// I bet Cylons wouldn't have this problem.

Time: 03.11.16 17:11
Description: Exception ticking world

java.lang.RuntimeException: info.loenwind.autosave.exceptions.NoHandlerFoundException: No storage handler found for field forceClientUpdate of type class crazypants.util.ResettingFlag of class crazypants.enderio.machine.AbstractMachineEntity
at info.loenwind.autosave.Writer.write(Writer.java:48)
at info.loenwind.autosave.Writer.write(Writer.java:117)
at crazypants.enderio.TileEntityEio.createClientUpdateNBT(TileEntityEio.java:39)
at crazypants.enderio.TileEntityEio.func_189518_D_(TileEntityEio.java:21)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187273_a(PlayerChunkMapEntry.java:287)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187280_d(PlayerChunkMapEntry.java:249)
at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:115)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:222)
at WorldServerOF.func_72835_b(WorldServerOF.java:37)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:698)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:240)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
at java.lang.Thread.run(Thread.java:745)
Caused by: info.loenwind.autosave.exceptions.NoHandlerFoundException: No storage handler found for field forceClientUpdate of type class crazypants.util.ResettingFlag of class crazypants.enderio.machine.AbstractMachineEntity
at info.loenwind.autosave.engine.StorableEngine.cacheHandlers(StorableEngine.java:163)
at info.loenwind.autosave.engine.StorableEngine.cacheHandlers(StorableEngine.java:180)
at info.loenwind.autosave.engine.StorableEngine.cacheHandlers(StorableEngine.java:180)
at info.loenwind.autosave.engine.StorableEngine.cacheHandlers(StorableEngine.java:180)
at info.loenwind.autosave.engine.StorableEngine.store_impl(StorableEngine.java:120)
at info.loenwind.autosave.engine.StorableEngine.store(StorableEngine.java:77)
at info.loenwind.autosave.Writer.write(Writer.java:46)
... 13 more

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

-- Head --
Thread: Server thread
Stacktrace:
at info.loenwind.autosave.Writer.write(Writer.java:48)
at info.loenwind.autosave.Writer.write(Writer.java:117)
at crazypants.enderio.TileEntityEio.createClientUpdateNBT(TileEntityEio.java:39)
at crazypants.enderio.TileEntityEio.func_189518_D_(TileEntityEio.java:21)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187273_a(PlayerChunkMapEntry.java:287)
at net.minecraft.server.management.PlayerChunkMapEntry.func_187280_d(PlayerChunkMapEntry.java:249)
at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:115)
at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:222)
at WorldServerOF.func_72835_b(WorldServerOF.java:37)

-- Affected level --
Details:
Level name: New World=
All players: 1 total; [EntityPlayerMP['Reydenge'/238, l='New World=', x=-842,51, y=64,00, z=-576,71]]
Chunk stats: ServerChunkCache: 1097 Drop: 0
Level seed: -7288467288506973489
Level generator: ID 04 - customized, ver 0. Features enabled: true
Level generator options: {"coordinateScale":684.412,"heightScale":684.412,"lowerLimitScale":512.0,"upperLimitScale":512.0,"depthNoiseScaleX":200.0,"depthNoiseScaleZ":200.0,"depthNoiseScaleExponent":0.5,"mainNoiseScaleX":80.0,"mainNoiseScaleY":160.0,"mainNoiseScaleZ":80.0,"baseSize":8.5,"stretchY":12.0,"biomeDepthWeight":1.0,"biomeDepthOffset":0.0,"biomeScaleWeight":1.0,"biomeScaleOffset":0.0,"seaLevel":63,"useCaves":true,"useDungeons":true,"dungeonChance":8,"useStrongholds":true,"useVillages":true,"useMineShafts":true,"useTemples":true,"useMonuments":true,"useRavines":true,"useWaterLakes":true,"waterLakeChance":4,"useLavaLakes":true,"lavaLakeChance":80,"useLavaOceans":false,"fixedBiome":-1,"biomeSize":4,"riverSize":4,"dirtSize":33,"dirtCount":10,"dirtMinHeight":0,"dirtMaxHeight":256,"gravelSize":33,"gravelCount":8,"gravelMinHeight":0,"gravelMaxHeight":256,"graniteSize":33,"graniteCount":10,"graniteMinHeight":0,"graniteMaxHeight":80,"dioriteSize":33,"dioriteCount":10,"dioriteMinHeight":0,"dioriteMaxHeight":80,"andesiteSize":33,"andesiteCount":10,"andesiteMinHeight":0,"andesiteMaxHeight":80,"coalSize":17,"coalCount":20,"coalMinHeight":0,"coalMaxHeight":128,"ironSize":9,"ironCount":21,"ironMinHeight":0,"ironMaxHeight":64,"goldSize":9,"goldCount":2,"goldMinHeight":0,"goldMaxHeight":32,"redstoneSize":8,"redstoneCount":8,"redstoneMinHeight":0,"redstoneMaxHeight":16,"diamondSize":8,"diamondCount":3,"diamondMinHeight":0,"diamondMaxHeight":16,"lapisSize":7,"lapisCount":1,"lapisCenterHeight":16,"lapisSpread":16}
Level spawn location: World: (-32,64,256), Chunk: (at 0,4,0 in -2,16; contains blocks -32,0,256 to -17,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 171546 game time, 182392 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 1906 (now: false), thunder time: 13703 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:698)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:240)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
Minecraft Version: 1.10.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 42494216 bytes (40 MB) / 1060372480 bytes (1011 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: 13, tallocated: 95
FML: MCP 9.32 Powered by Forge 12.18.2.2117 Optifine OptiFine_1.10.2_HD_U_C3 13 mods loaded, 13 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-1.10.2-12.18.2.2117.jar)
UCHIJAAAA Forge{12.18.2.2117} [Minecraft Forge] (forge-1.10.2-12.18.2.2117.jar)
UCHIJAAAA endercore{1.10.2-0.4.1.58-beta} [EnderCore] (EnderCore-1.10.2-0.4.1.58-beta.jar)
UCHIJAAAA mantle{1.10.2-1.1.1.194} [Mantle] (Mantle-1.10.2-1.1.1.jar)
UCHIJAAAA tconstruct{1.10.2-2.5.6b.jenkins424} [Tinkers' Construct] (TConstruct-1.10.2-2.5.6b.jar)
UCHIJAAAA immersiveengineering{0.10-48} [Immersive Engineering] (ImmersiveEngineering-0.10-48.jar)
UCHIJAAAA JEI{3.13.0.338} [Just Enough Items] (jei_1.10.2-3.13.0.338.jar)
UCHIJAAAA EnderIO{1.10.2-3.0.1.125_beta} [Ender IO] (EnderIO-1.10.2-3.0.1.125_beta.jar)
UCHIJAAAA inventorytweaks{1.62-dev-66-c082db3} [Inventory Tweaks] (InventoryTweaks-1.62-dev-66.jar)
UCHIJAAAA jeresources{0.5.4.67} [Just Enough Resources] (JustEnoughResources-1.10.2-0.5.4.67.jar)
UCHIJAAAA tinkertoolleveling{1.10.2-1.0.1.DEV.f5def58} [Tinkers Tool Leveling] (TinkerToolLeveling-1.10.2-1.0.1.jar)
UCHIJAAAA treechopper{1.1.0} [Tree Chopper] (TreeChopper-1.10.2-1.1.0.jar)
Loaded coremods (and transformers):
EnderCorePlugin (EnderCore-1.10.2-0.4.1.58-beta.jar)
com.enderio.core.common.transform.EnderCoreTransformer
FMLPlugin (InventoryTweaks-1.62-dev-66.jar)
invtweaks.forge.asm.ContainerTransformer
GL info: ERROR RuntimeException: No OpenGL context found in the current thread.
Pulsar/tconstruct loaded Pulses:
- TinkerCommons (Enabled/Forced)
- TinkerWorld (Enabled/Not Forced)
- TinkerTools (Enabled/Not Forced)
- TinkerHarvestTools (Enabled/Forced)
- TinkerMeleeWeapons (Enabled/Forced)
- TinkerRangedWeapons (Enabled/Forced)
- TinkerModifiers (Enabled/Forced)
- TinkerSmeltery (Enabled/Not Forced)
- TinkerGadgets (Enabled/Not Forced)
- TinkerOredict (Enabled/Forced)
- TinkerIntegration (Enabled/Forced)
- TinkerFluids (Enabled/Forced)
- TinkerMaterials (Enabled/Forced)
- TinkerModelRegister (Enabled/Forced)

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.):
              * Optifine is installed. This is NOT supported.
             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/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.jar!/cofh/api/energy/EnergyStorage.class
              * RF API class 'IEnergyConnection' is loaded from: jar:file:/C:/Users/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.jar!/cofh/api/energy/IEnergyConnection.class
              * RF API class 'IEnergyContainerItem' is loaded from: jar:file:/C:/Users/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.jar!/cofh/api/energy/IEnergyContainerItem.class
              * RF API class 'IEnergyHandler' is loaded from: jar:file:/C:/Users/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.jar!/cofh/api/energy/IEnergyHandler.class
              * RF API class 'IEnergyProvider' is loaded from: jar:file:/C:/Users/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.jar!/cofh/api/energy/IEnergyProvider.class
              * RF API class 'IEnergyReceiver' is loaded from: jar:file:/C:/Users/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.jar!/cofh/api/energy/IEnergyReceiver.class
              * RF API class 'IEnergyStorage' is loaded from: jar:file:/C:/Users/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.jar!/cofh/api/energy/IEnergyStorage.class
              * RF API class 'ItemEnergyContainer' is loaded from: jar:file:/C:/Users/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.jar!/cofh/api/energy/ItemEnergyContainer.class
              * RF API class 'TileEnergyHandler' is loaded from: jar:file:/C:/Users/2K/AppData/Roaming/.minecraft/mods/ImmersiveEngineering-0.10-48.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)

Profiler Position: N/A (disabled)
Player Count: 1 / 8; [EntityPlayerMP['Reydenge'/238, l='New World=', x=-842,51, y=64,00, z=-576,71]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'
OptiFine Version: OptiFine_1.10.2_HD_U_C3
Render Distance Chunks: 14
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.5.13399 Compatibility Profile Context 15.201.1151.1008
OpenGlRenderer: AMD Radeon HD 7600M Series
OpenGlVendor: ATI Technologies Inc.
CpuCount: 8

that's "create the NBT to send as update to the client" or "create the ( (client update) NBT )"

(the other 2 usecases for the autosave are "create NBT for save file" and "create NBT to add to item to be dropped". And the 3 loads for those, o/c.)

And yes, that whole functionality is a library by me that could potentially be packaged stand-alone.

Please try to narrow down which other mod causes this by removing them one by one until it no longer crashes. Start with Optifine, then Inventory Tweaks.

That's faster than me finding those mods in those versions and adding them one by one to my dev env. Thank you.

crazypants.enderio.machine.AbstractMachineEntity
at info.loenwind.autosave.Writer.write(Writer.java:48)
at info.loenwind.autosave.Writer.write(Writer.java:117)
at crazypants.enderio.TileEntityEio.createClientUpdateNBT(TileEntityEio.java:39)

what the? is this tool calling client side data from a server entitity? or is the naming just off and does the same ?

also this "info.loenwind.autosave" is not listed as mod, where does that come from?

EDIT: .... info.loenwind.autosave .... loenwind ... HenryLoenwind .... facepalm :D

You have Ender IO Addons in your mod folder, which is a mod for Minecraft 1.7.10.