---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 7/27/16 7:46 PM
Description: Ticking block entity

java.lang.ArrayIndexOutOfBoundsException: 54
at mekanism.common.tile.TileEntityContainerBlock.func_70301_a(TileEntityContainerBlock.java:87)
at mekanism.common.util.InventoryUtils.putStackInInventory(InventoryUtils.java:170)
at mekanism.common.tile.TileEntityDigitalMiner.onUpdate(TileEntityDigitalMiner.java:296)
at mekanism.common.tile.TileEntityBasicBlock.func_145845_h(TileEntityBasicBlock.java:77)
at net.minecraft.world.World.func_72939_s(World.java:1939)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:636)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

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

-- Head --
Stacktrace:
at mekanism.common.tile.TileEntityContainerBlock.func_70301_a(TileEntityContainerBlock.java:87)
at mekanism.common.util.InventoryUtils.putStackInInventory(InventoryUtils.java:170)
at mekanism.common.tile.TileEntityDigitalMiner.onUpdate(TileEntityDigitalMiner.java:296)
at mekanism.common.tile.TileEntityBasicBlock.func_145845_h(TileEntityBasicBlock.java:77)

-- Block entity being ticked --
Details:
Name: DigitalMiner // mekanism.common.tile.TileEntityDigitalMiner
Block type: ID #487 (tile.MachineBlock // mekanism.common.block.BlockMachine)
Block data value: 4 / 0x4 / 0b0100
Block location: World: (665,63,929), Chunk: (at 9,3,1 in 41,58; contains blocks 656,0,928 to 671,255,943), Region: (1,1; contains chunks 32,32 to 63,63, blocks 512,0,512 to 1023,255,1023)
Actual block type: ID #487 (tile.MachineBlock // mekanism.common.block.BlockMachine)
Actual block data value: 4 / 0x4 / 0b0100
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:1939)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)

-- Affected level --
Details:
Level name: world
All players: 0 total; []
Chunk stats: ServerChunkCache: 625 Drop: 0
Level seed: 1591636805691979412
Level generator: ID 04 - BIOMESOP, ver 0. Features enabled: true
Level generator options:
Level spawn location: World: (660,63,960), Chunk: (at 4,3,0 in 41,60; contains blocks 656,0,960 to 671,255,975), Region: (1,1; contains chunks 32,32 to 63,63, blocks 512,0,512 to 1023,255,1023)
Level time: 1453403 game time, 6000 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 9305 (now: false), thunder time: 39316 (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:636)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

-- System Details --
Details:
Minecraft Version: 1.7.10
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: 220502616 bytes (210 MB) / 701046784 bytes (668 MB) up to 4281597952 bytes (4083 MB)
JVM Flags: 5 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 46, tcache: 0, allocated: 13, tallocated: 96
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 20 mods loaded, 20 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 CodeChickenCore{1.0.2.11} CodeChicken Core
UCHIJAAAA Micdoodlecore{} Micdoodle8 Core
UCHIJAAAA NotEnoughItems{1.0.2.15} Not Enough Items
UCHIJAAAA BiomesOPlenty{2.1.0} Biomes O' Plenty
UCHIJAAAA darkcore{0.3} Dark Core
UCHIJAAAA GalacticraftCore{3.0.11} Galacticraft Core
UCHIJAAAA GalacticraftMars{3.0.11} Galacticraft Planets
UCHIJAAAA Mantle{1.7.10-0.3.2.jenkins191} Mantle
UCHIJAAAA ForgeMultipart{1.1.2.331} Forge Multipart
UCHIJAAAA Mekanism{9.0.1} Mekanism
UCHIJAAAA MekanismGenerators{9.0.1} MekanismGenerators
UCHIJAAAA MekanismTools{9.0.1} MekanismTools
UCHIJAAAA Roguelike{1.3.6.3} Roguelike Dungeons
UCHIJAAAA TardisMod{0.994} Tardis Mod
UCHIJAAAA TConstruct{1.7.10-1.8.8.build988} Tinkers' Construct
UCHIJAAAA McMultipart{1.1.2.331} Minecraft Multipart Plugin
UCHIJAAAA ForgeMicroblock{1.1.2.331} Forge Microblocks
GL info: ERROR RuntimeException: No OpenGL context found in the current thread.
Mantle Environment: Environment healthy.
TConstruct Environment: Environment healthy.
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

Yes, this is a mod pack, but the mekanism error is here.

Update Mekanism :)