here's the crash report:

---- Minecraft Crash Report ----

WARNING: coremods are present:
HFTransformer (Harvest-Festival-1.10.2-0.5.1.jar)
Contact their authors BEFORE contacting forge

// Ooh. Shiny.

Time: 9/23/16 6:48 PM
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at joshie.harvest.core.base.block.BlockHFSmashable.func_180653_a(BlockHFSmashable.java:49)
at net.minecraft.world.Explosion.func_77279_a(Explosion.java:230)
at net.minecraft.world.WorldServer.func_72885_a(WorldServer.java:1175)
at net.minecraft.world.World.func_72876_a(World.java:2303)
at net.minecraft.entity.item.EntityTNTPrimed.func_70515_d(SourceFile:94)
at net.minecraft.entity.item.EntityTNTPrimed.func_70071_h_(SourceFile:84)
at net.minecraft.world.World.func_72866_a(World.java:1964)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:838)
at net.minecraft.world.World.func_72870_g(World.java:1934)
at net.minecraft.world.World.func_72939_s(World.java:1750)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:619)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709)
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(Unknown Source)

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

-- Head --
Thread: Server thread
Stacktrace:
at joshie.harvest.core.base.block.BlockHFSmashable.func_180653_a(BlockHFSmashable.java:49)
at net.minecraft.world.Explosion.func_77279_a(Explosion.java:230)
at net.minecraft.world.WorldServer.func_72885_a(WorldServer.java:1175)
at net.minecraft.world.World.func_72876_a(World.java:2303)
at net.minecraft.entity.item.EntityTNTPrimed.func_70515_d(SourceFile:94)
at net.minecraft.entity.item.EntityTNTPrimed.func_70071_h_(SourceFile:84)
at net.minecraft.world.World.func_72866_a(World.java:1964)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:838)
at net.minecraft.world.World.func_72870_g(World.java:1934)

-- Entity being ticked --
Details:
Entity Type: PrimedTnt (net.minecraft.entity.item.EntityTNTPrimed)
Entity ID: 46875
Entity Name: Block of TNT
Entity's Exact location: -92.49, 65.00, 90.49
Entity's Block location: World: (-93,65,90), Chunk: (at 3,4,10 in -6,5; contains blocks -96,0,80 to -81,255,95), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Entity's Momentum: 0.00, -0.00, 0.00
Entity's Passengers: []
Entity's Vehicle: ERROR NullPointerException: null
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:1750)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:619)

-- Affected level --
Details:
Level name: The Lab
All players: 1 total; [EntityPlayerMP['ItSureStingz'/324, l='The Lab', x=-93.24, y=69.75, z=97.88]]
Chunk stats: ServerChunkCache: 337 Drop: 0
Level seed: -6635176535348634658
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (-28,64,92), Chunk: (at 4,4,12 in -2,5; contains blocks -32,0,80 to -17,255,95), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 162972 game time, 109345 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709)
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(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.10.2
Operating System: Windows 10 (x86) version 10.0
Java Version: 1.8.0_101, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 103461184 bytes (98 MB) / 523501568 bytes (499 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP 9.32 Powered by Forge 12.18.1.2092 Optifine OptiFine_1.10.2_HD_U_C3 19 mods loaded, 19 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
UCHIJAAAA FML{8.0.99.99} Forge Mod Loader
UCHIJAAAA Forge{12.18.1.2092} Minecraft Forge
UCHIJAAAA JEI{3.10.0.261} Just Enough Items
UCHIJAAAA appleskin{1.0.4} AppleSkin
UCHIJAAAA cannibalism{3.0.0} Cannibalism
UCHIJAAAA claycraft{3.0} [Claycraft](Claycraftmod v3.0 - MC1.10.2 Forge.jar)
UCHIJAAAA cordage{1.0.1} Cordage
UCHIJAAAA simpleArtilleryMod{Alpha1_0_2} CustomizableArtilleryMod
UCHIJAAAA DragonMounts{r46-1.10.2} Dragon Mounts
UCHIJAAAA lootablebodies{2.2.0} DrCyano's Lootable Bodies
UCHIJAAAA F2L{1.10.2} [Flesh2Leather](Flesh2Leather [1.10.2].jar)
UCHIJAAAA samsfooddetails{1.0.1} Food Details
UCHIJAAAA foragecraft{1.7} ForageCraft
UCHIJAAAA fishing{1.4.4} Fishing Net Mod
UCHIJAAAA harvestfestival{0.5.1} Harvest Festival
UCHIJAAAA Neat{1.3-12} [Neat](Neat 1.3-12.jar)
UCHIJAAAA pplus{1.10.2} [Peaceful Plus](Peaceful Plus [1.10.2].jar)
UCHIJAAAA shellMod{Beta1_5_1} shellMod
Loaded coremods (and transformers):
HFTransformer (Harvest-Festival-1.10.2-0.5.1.jar)
joshie.harvest.asm.HFTransformer
GL info: ERROR RuntimeException: No OpenGL context found in the current thread.
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [EntityPlayerMP['ItSureStingz'/324, l='The Lab', x=-93.24, y=69.75, z=97.88]]
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: 8
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.3.0 - Build 20.19.15.4331
OpenGlRenderer: Intel(R) HD Graphics 4400
OpenGlVendor: Intel
CpuCount: 4