---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 8/26/16 7:14 PM
Description: Ticking block entity

java.lang.IllegalStateException: The fluid handler buildcraft.transport.TileGenericPipeCompat@97a58 filled inconsistently. Expected 50, got 0.
at ic2.core.util.LiquidUtil.transfer(LiquidUtil.java:194)
at ic2.core.util.LiquidUtil.distributeAll(LiquidUtil.java:158)
at ic2.core.item.ItemUpgradeModule.onTick(ItemUpgradeModule.java:407)
at ic2.core.block.machine.tileentity.TileEntityCondenser.updateEntityServer(TileEntityCondenser.java:141)
at ic2.core.block.TileEntityBlock.func_145845_h(TileEntityBlock.java:195)
at net.minecraft.world.World.func_72939_s(World.java:2583)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:673)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:986)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693)
at java.lang.Thread.run(Thread.java:745)

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

-- Head --
Stacktrace:
at ic2.core.util.LiquidUtil.transfer(LiquidUtil.java:194)
at ic2.core.util.LiquidUtil.distributeAll(LiquidUtil.java:158)
at ic2.core.item.ItemUpgradeModule.onTick(ItemUpgradeModule.java:407)
at ic2.core.block.machine.tileentity.TileEntityCondenser.updateEntityServer(TileEntityCondenser.java:141)
at ic2.core.block.TileEntityBlock.func_145845_h(TileEntityBlock.java:195)

-- Block entity being ticked --
Details:
Name: Condenser // ic2.core.block.machine.tileentity.TileEntityCondenser
Block type: ID #233 (blockMachine2 // ic2.core.block.machine.BlockMachine2)
Block data value: 15 / 0xF / 0b1111
Block location: World: (-1542,83,4571), Chunk: (at 10,5,11 in -97,285; contains blocks -1552,0,4560 to -1537,255,4575), Region: (-4,8; contains chunks -128,256 to -97,287, blocks -2048,0,4096 to -1537,255,4607)
Actual block type: ID #233 (blockMachine2 // ic2.core.block.machine.BlockMachine2)
Actual block data value: 15 / 0xF / 0b1111
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:2583)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:673)

-- Affected level --
Details:
Level name: world
All players: 1 total; [EntityPlayerMP['HydroONE'/306, l='world', x=-1571.73, y=81.52, z=4568.24](HydroONE at -1571.729807140552,81.51966814529723,4568.244352479186)]
Chunk stats: ServerChunkCache: 568 Drop: 0
Level seed: -6237878241837186956
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (227,93,181), Chunk: (at 3,5,5 in 14,11; contains blocks 224,0,176 to 239,255,191), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 514316134 game time, 532434521 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 3844 (now: false), thunder time: 50121 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:986)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693)
at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
Minecraft Version: 1.7.10
Thermos Version: cyberdynecc:Thermos:1.7.10-1614.58
Plugins: WorldEdit, Playtime, OpenInv, Block_Finder, Essentials, ClearLag, WorldBorder, BkrReload, EndlessOnline, LokiBlocker, BanManager, WorldGuard, MultiWorld, CustomServerMessages, ChunkLoader, EssentialsChat, PermissionsEx, SQLibrary, WGExtender, Vault, EssentialsSpawn, Prism, Scavenger, ShoppingCartReloaded, WGAllower, ProtocolLib, PermissionsExTabColors, ModFixNG, JSONAPI, HolographicDisplays
Disabled Plugins:
Operating System: Linux (amd64) version 4.2.0-42-generic
Java Version: 1.8.0_91, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1023252160 bytes (975 MB) / 2075918336 bytes (1979 MB) up to 34150416384 bytes (32568 MB)
JVM Flags: 6 total; -Xmx32G -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=24 -XX:+AggressiveOpts
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 15, tallocated: 95
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 45 mods loaded, 45 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{9.05} Minecraft Coder Pack
UCHIJAAAA FML{7.10.99.99} Forge Mod Loader
UCHIJAAAA Forge{10.13.4.1614} Minecraft Forge
UCHIJAAAA kimagine{0.2} KImagine
UCHIJAAAA appliedenergistics2-core{rv3-beta-6} Applied Energistics 2 Core
UCHIJAAAA CodeChickenCore{1.0.7.47} CodeChicken Core
UCHIJAAAA NotEnoughItems{1.0.5.118} Not Enough Items
UCHIJAAAA BuildCraft|Core{7.1.17} BuildCraft
UCHIJAAAA BuildCraft|Silicon{7.1.17} BC Silicon
UCHIJAAAA BuildCraft|Transport{7.1.17} BC Transport
UCHIJAAAA BuildCraft|Builders{7.1.17} BC Builders
UCHIJAAAA BuildCraft|Energy{7.1.17} BC Energy
UCHIJAAAA BuildCraft|Factory{7.1.17} BC Factory
UCHIJAAAA Additional-Buildcraft-Objects{MC1.7.10-BC7.1release4.0.6} Additional Buildcraft Objects
UCHIJAAAA additionalpipes{4.7.0} Additional Pipes
UCHIJAAAA IC2{2.2.822-experimental} IndustrialCraft 2
UCHIJAAAA AdvancedSolarPanel{1.7.10-3.5.1} Advanced Solar Panels
UCHIJAAAA appliedenergistics2{rv3-beta-6} Applied Energistics 2
UCHIJAAAA BuildCraft|Robotics{7.1.17} BC Robotics
UCHIJAAAA Forestry{4.0.9.38} Forestry for Minecraft
UCHIJAAAA BuildCraft|Compat{7.1.5} BuildCraft Compat
UCHIJAAAA Railcraft{9.12.2.0} Railcraft
UCHIJAAAA chisel{2.9.5.11} Chisel
UCHIJAAAA colorblocks{1.4} Color Blocks
UCHIJAAAA EnderStorage{1.4.7.37} EnderStorage
UCHIJAAAA EventHelper{1.6} EventHelper
UCHIJAAAA fc-dummy{0} fc-dummy
UCHIJAAAA GraviSuite{1.7.10-2.0.3} Graviation Suite
UCHIJAAAA iChunUtil{4.2.2} iChunUtil
UCHIJAAAA Hats{4.0.1} Hats
UCHIJAAAA IC2NuclearControl{2.3.4a} Nuclear Control 2
UCHIJAAAA IronChest{6.0.62.742} Iron Chest
UCHIJAAAA Mantle{1.7.10-0.3.2.jenkins191} Mantle
UCHIJAAAA MineTweaker3{3.0.10} MineTweaker 3
UCHIJAAAA MTRM{1.0} MineTweakerRecipeMaker
UCHIJAAAA NEIAddons{1.12.14.40} NEI Addons
UCHIJAAAA NEIAddons|Developer{1.12.14.40} NEI Addons: Developer Tools
UCHIJAAAA NEIAddons|AppEng{1.12.14.40} NEI Addons: Applied Energistics 2
UCHIJAAAA NEIAddons|Botany{1.12.14.40} NEI Addons: Botany
UCHIJAAAA NEIAddons|Forestry{1.12.14.40} NEI Addons: Forestry
UCHIJAAAA NEIAddons|CraftingTables{1.12.14.40} NEI Addons: Crafting Tables
UCHIJAAAA NEIAddons|ExNihilo{1.12.14.40} NEI Addons: Ex Nihilo
UCHIJAAAA neiintegration{1.1.0} NEI Integration
UCHIJAAAA qucra{1.7.10-1.6} Quick Crafting
UCHIJAAAA Waila{1.5.10} Waila
AE2 Version: beta rv3-beta-6 for Forge 10.13.4.1448
Mantle Environment: DO NOT REPORT THIS CRASH! Unsupported mods in environment: bukkit
Chisel: Errors like "[FML]: Unable to lookup ..." are NOT the cause of this crash. You can safely ignore these errors. And update forge while you're at it.
Forestry : Warning: You have mods that change the behavior of Minecraft, ForgeModLoader, and/or Minecraft Forge to your client:
Bukkit, Cauldron, or other Bukkit replacement
These may have caused this error, and may not be supported. Try reproducing the crash WITHOUT these mods, and report it then.
Info: The following plugins have been disabled in the config: mail
AE2 Integration: IC2:ON, RotaryCraft:OFF, RC:ON, BuildCraftCore:ON, BuildCraftTransport:ON, BuildCraftBuilder:ON, RF:ON, RFItem:ON, MFR:OFF, DSU:OFF, FZ:OFF, FMP:OFF, RB:OFF, CLApi:OFF, Waila:ON, Mekanism:OFF, ImmibisMicroblocks:OFF, BetterStorage:OFF, OpenComputers:OFF, PneumaticCraft:OFF
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 1 / 80; [EntityPlayerMP['HydroONE'/306, l='world', x=-1571.73, y=81.52, z=4568.24](HydroONE at -1571.729807140552,81.51966814529723,4568.244352479186)]
Is Modded: Definitely; Server brand changed to 'thermos,cauldron,craftbukkit,mcpc,kcauldron,fml,forge'
Type: Dedicated Server (map_server.txt)

hmm, works fine in 1.8

Also works fine in 1.7.10 with IC2 2.2.826. Can you upload a screenshot of your setup please?

Closing due to inactivity and inability to reproduce. Please re-open if you have any more information that would help me reproduce this.

@multiplemonomials
Report: https://pastebin.com/TLZbk0WK
Video: https://youtu.be/hvCMEj9GAx8
Forge 10.13.4.1558, LiteLoader 1.7.10-04
I can upload corrupted world, if you like.