MC crashes while starting

The problem started after updating all of my mods, but since I updated all of them at once, I'm not entirely sure which one it is. I am running Minecraft 1.7.10 with Forge 10.13.4.1558.

Here's the crash report.

---- Minecraft Crash Report ----

// Hey, that tickles! Hehehe!

Time: 5/4/17 4:20 PM

Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: pneumaticCraft/common/thirdparty/buildcraft/TileEntityPneumaticEngine

at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)

at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:559)

at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:243)

at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:480)

at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:878)

at net.minecraft.client.main.Main.main(SourceFile:148)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

Caused by: java.lang.NoClassDefFoundError: pneumaticCraft/common/thirdparty/buildcraft/TileEntityPneumaticEngine

at pneumaticCraft.common.thirdparty.buildcraft.BuildCraft.preInit(BuildCraft.java:32)

at pneumaticCraft.common.thirdparty.ThirdPartyManager.preInit(ThirdPartyManager.java:88)

at pneumaticCraft.PneumaticCraft.PreInit(PneumaticCraft.java:80)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532)

at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)

at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)

at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:556)

... 10 more

Caused by: java.lang.ClassNotFoundException: pneumaticCraft.common.thirdparty.buildcraft.TileEntityPneumaticEngine

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 39 more

Caused by: java.lang.NoClassDefFoundError: buildcraft/api/power/IPowerReceptor

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:760)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)

... 41 more

Caused by: java.lang.ClassNotFoundException: buildcraft.api.power.IPowerReceptor

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 45 more

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

---------------------------------------------------------------------------------------

-- System Details --

Details:

Minecraft Version: 1.7.10

Operating System: Mac OS X (x86_64) version 10.11.6

Java Version: 1.8.0_74, Oracle Corporation

Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 220229344 bytes (210 MB) / 427446272 bytes (407 MB) up to 2134114304 bytes (2035 MB)

JVM Flags: 5 total; -Xmx2G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1448 Optifine OptiFine_1.7.10_HD_U_D6 49 mods loaded, 49 mods active

States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

UCH mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)

UCH FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1448-1.7.10.jar)

UCH Forge{10.13.4.1448} [Minecraft Forge] (forge-1.7.10-10.13.4.1448-1.7.10.jar)

UCH CodeChickenCore{1.0.1.8} [CodeChicken Core] (minecraft.jar)

UCH Micdoodlecore{} [Micdoodle8 Core] (minecraft.jar)

UCH NotEnoughItems{1.0.2.15} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.2.15-universal copy.jar)

UCH PlayerAPI{1.4} [Player API] (minecraft.jar)

UCH RenderPlayerAPI{1.4} [Render Player API] (minecraft.jar)

UCH SmartCore{1.0.3} [Smart Core] (minecraft.jar)

UCH <CoFH ASM>{000} [CoFH ASM] (minecraft.jar)

UCH bettervanilla{1.1.1} [BetterVanilla] (BetterVanilla-1.7.10-1.1.1.jar)

UCH CoFHCore{1.7.10R3.1.3} [CoFH Core] (CoFHCore-[1.7.10]3.1.3-327.jar)

UCH BigReactors{0.4.3A} [Big Reactors] (BigReactors-0.4.3A.jar)

UCH brewingapi{1.2.0} [Brewing-API] (Brewing-API-1.7.2-1.2.0.jar)

UCH BuildCraft|Core{7.1.21} [BuildCraft] (buildcraft-7.1.21.jar)

UCH BuildCraft|Builders{7.1.21} [BC Builders] (buildcraft-7.1.21.jar)

UCH BuildCraft|Energy{7.1.21} [BC Energy] (buildcraft-7.1.21.jar)

UCH BuildCraft|Factory{7.1.21} [BC Factory] (buildcraft-7.1.21.jar)

UCH BuildCraft|Robotics{7.1.21} [BC Robotics] (buildcraft-7.1.21.jar)

UCH BuildCraft|Silicon{7.1.21} [BC Silicon] (buildcraft-7.1.21.jar)

UCH BuildCraft|Transport{7.1.21} [BC Transport] (buildcraft-7.1.21.jar)

UCH BuildCraft|Compat{7.1.6} [BuildCraft Compat] (buildcraft-compat-7.1.6.jar)

UCH cfm{3.4.8} [�9MrCrayfish's Furniture Mod] (cfm-3.4.8-mc1.7.10.jar)

UCH IC2{2.2.823-experimental} [IndustrialCraft 2] (industrialcraft-2-2.2.823-experimental.jar)

UCH CompactSolars{4.4.39.315} [Compact Solar Arrays] (CompactSolars-Mod-1.7.10.jar)

UCH CopiousDogs{${mcversion}-${version}} [Copious Dogs] (Copious-Dogs-1.7.10 copy.jar)

UCH CraftableFireMod{1.7.10} [CraftableFireMod] (craftable_fire_mod.jar)

UCH DamageIndicatorsMod{3.2.0} [Damage Indicators] (Damage-Indicators-Mod-1.7.10 copy.jar)

UCH FastCraft{1.21} [FastCraft] (fastcraft-1.21.jar)

UCH GalacticraftCore{3.0.1} [Galacticraft Core] (GalacticraftCore-BETA-1.7-3.0.1.170 copy.jar)

UCH GalacticraftMars{3.0.1} [Galacticraft Planets] (Galacticraft-Planets-BETA-1.7-3.0.1.170 copy.jar)

UCH IC2NuclearControl{2.4.1a} [Nuclear Control 2] (IC2NuclearControl-2.4.1a.jar)

UCH iChunUtil{4.1.3} [iChunUtil] (iChun-Util-Mod-1.7.10.jar)

UCH IronChest{6.0.62.742} [Iron Chest] (ironchest-1.7.10-6.0.62.742-universal.jar)

UCH RadixCore{2.1.2} [RadixCore] (RadixCore-1.7.10-2.1.2-universal.jar)

UCH MCA{1.7.10-5.2.1} [Minecraft Comes Alive] (MCA-1.7.10-5.2.1-universal.jar)

UCH Morph{0.9.2} [Morph] (Morphing-Mod-1.7.10.jar)

UCH ForgeMultipart{1.1.0.296} [Forge Multipart] (ForgeMultipart-1.7.10-1.1.0.296-universal.jar)

UCH OpenComputers|Core{1.0.0} [OpenComputers (Core)] (OpenComputers-MC1.7.10-1.3.2.34-universal copy.jar)

UCH OpenComputers{1.3.2.34} [OpenComputers] (OpenComputers-MC1.7.10-1.3.2.34-universal copy.jar)

UCE PneumaticCraft{1.2.5} [PneumaticCraft] (PneumaticCraft-1.2.5 copy.jar)

UCH ProjRed|Core{4.4.5.44} [ProjectRed] (ProjectRed-Base-1.7.10-4.4.5.44.jar)

UCH SmartMoving{15.6} [Smart Moving] (SmartMoving-1.7.10-15.6.jar)

UCH SmartRender{2.1} [Smart Render] (SmartRender-1.7.10-2.1.jar)

UCH voxelmap{1.7.10} [VoxelMap No Radar] (voxelmapNoRadar-1.7.10-1.0 copy 2.jar)

UCH Waila{1.5.3} [Waila] (Waila-Mod-1.7.10.jar)

UCH Kradxns Minimap{2.0} [Minimap] (Xray2.02.jar)

UCH McMultipart{1.1.0.296} [Minecraft Multipart Plugin] (ForgeMultipart-1.7.10-1.1.0.296-universal.jar)

UCH ForgeMicroblock{1.1.0.296} [Forge Microblocks] (ForgeMultipart-1.7.10-1.1.0.296-universal.jar)

GL info: ' Vendor: 'ATI Technologies Inc.' Version: '2.1 ATI-1.42.15' Renderer: 'AMD Radeon HD 6770M OpenGL Engine'

CoFHCore: -[1.7.10]3.1.3-327

OptiFine Version: OptiFine_1.7.10_HD_U_D6

Render Distance Chunks: 8

Mipmaps: 4

Anisotropic Filtering: 1

Antialiasing: 0

Multitexture: false

OpenGlVersion: 2.1 ATI-1.42.15

OpenGlRenderer: AMD Radeon HD 6770M OpenGL Engine

OpenGlVendor: ATI Technologies Inc.

CpuCount: 4

Thank you!

Alright. Thanks!