Somehow when i put traincraft in my modpack, it crashes and in the log i can see that it conflicts with T construct, any ideas how to fix that ?

paste the crashlog on pastebin and link it here. We had this discussion on the forums already. Traincraft works fine with Tinkers Construct

Probably a Tinker's issue, works fine for me, but send us the error log anyway, we may be able to help.

You were right guys, it was just a random crash, it actually works fine after couple of tries, thanks for the help anyway :D

@Nightblade765 can you please post the crash report, a random crash is most related to a mod and it would be nice when we know that this mod isn't Traincraft. If it isn't Traincraft I report the crash to the mod author of the crashing mod

Hello I have a problem with TrainCraft and Tinkers I think
when I add traincraft minecraft crashed

this is the crash

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 16/10/16 04:16 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: tconstruct/library/tools/ToolCore
at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:544)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
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:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.NoClassDefFoundError: tconstruct/library/tools/ToolCore
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:344)
at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:42)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:512)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
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:483)
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.loadMods(Loader.java:513)
... 10 more
Caused by: java.lang.ClassNotFoundException: tconstruct.library.tools.ToolCore
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)
... 35 more
Caused by: java.lang.NoClassDefFoundError: cofh/api/energy/IEnergyContainerItem
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)
... 37 more
Caused by: java.lang.ClassNotFoundException: cofh.api.energy.IEnergyContainerItem
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)
... 41 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: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 429085016 bytes (409 MB) / 934805504 bytes (891 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G
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 10.13.4.1614 Optifine OptiFine_1.7.10_HD_C1 59 mods loaded, 59 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC mcp{9.05} Minecraft Coder Pack
UC FML{7.10.99.99} Forge Mod Loader
UC Forge{10.13.4.1614} Minecraft Forge
UC CodeChickenCore{1.0.4.29} CodeChicken Core
UC NotEnoughItems{1.0.3.74} Not Enough Items
UC lucky{5.1.0} Lucky Block
UC deconstruction{2.2.5} The Deconstruction Mod
UC abyssalcraft{1.9.1.2} AbyssalCraft
UC Baubles{1.0.1.10} Baubles
UC adventurebackpack{1.7.10-0.8b} Adventure Backpack
UC AncientWarfare{2.4.114-beta-MC1.7.10} Ancient Warfare Core
UC AncientWarfareAutomation{2.4.114-beta-MC1.7.10} Ancient Warfare Automation
UC AncientWarfareNEIPlugin{2.4.114-beta-MC1.7.10} Ancient Warfare NEI Plugin
UC AncientWarfareNpc{2.4.114-beta-MC1.7.10} Ancient Warfare NPCs
UC AncientWarfareStructure{2.4.114-beta-MC1.7.10} Ancient Warfare Structures
UC nevermine{2.3} AdventOfAscension
UC Aquaculture{1.2.3} Aquaculture
UC BiomesOPlenty{2.1.0} Biomes O' Plenty
UC Botania{r1.8-247} [Botania](Botania r1.8-247.jar)
UC chocolateQuest{1.0} Chocolate Quest
UC DamageIndicatorsMod{3.2.0} [Damage Indicators](Damage Indicators 1.7.10.jar)
UC elementalcreepers{4.3.0} [Elemental Creepers](Elemental Creepers-universal_1.7.10-4.3.0.jar)
UC eplus{3.0.2-d} Enchanting Plus
UC evilcraft{0.9.3} EvilCraft
UC GraveStone{2.16.0} GraveStone
UC GrimoireOfGaia{1.0.0} Grimoire of Gaia 3
UC hammertime{Hammer Time-1.7.10-1.3.6} Hammer Time!
UC InfernalMobs{1.6.6} Infernal Mobs
UC malisiscore{1.7.10-0.14.3} MalisisCore
UC malisisdoors{1.7.10-1.13.2} Malisis' Doors
UC Mantle{1.7.10-0.3.2.jenkins191} Mantle
UC RadixCore{2.1.3} RadixCore
UC MCA{1.7.10-5.2.2} Minecraft Comes Alive
UC MetallurgyCore{4.0.4} Metallurgy Core
UE TConstruct{1.7.10-1.8.8.build988} Tinkers' Construct
UC Metallurgy{4.0.6} Metallurgy 4
UC me{1.3.2.1} More Enchantments
UC AencEx{0.0.1} AencEx
UC cfm{3.4.8} §9MrCrayfish's Furniture Mod
UC NEIAddons{1.12.14.40} NEI Addons
UC NEIAddons|Developer{1.12.14.40} NEI Addons: Developer Tools
UC NEIAddons|AppEng{1.12.14.40} NEI Addons: Applied Energistics 2
UC NEIAddons|Botany{1.12.14.40} NEI Addons: Botany
UC NEIAddons|Forestry{1.12.14.40} NEI Addons: Forestry
UC NEIAddons|CraftingTables{1.12.14.40} NEI Addons: Crafting Tables
UC NEIAddons|ExNihilo{1.12.14.40} NEI Addons: Ex Nihilo
UC neiintegration{1.1.1} NEI Integration
UC PalomitasMod{BETA} [Palomitas Mod](PalomitasMod v2.2.jar)
UC desertcraft{1.7.2b} [Pam's DesertCraft](Pam's DesertCraft 1.7.10a.zip)
UC harvestthenether{1.7.10} [Pam's Harvest the Nether](Pam's Harvest the Nether 1.7.10a.jar)
UC harvestcraft{1.7.10j} [Pam's HarvestCraft](Pam's HarvestCraft 1.7.10k.jar)
UC simplerecipes{1.7.10a} [Pam's Simple Recipes](Pam's Simple Recipes 1.7.10a.jar)
UC weeeflowers{1.7.2b} [Pam's Weee! Flowers](Pam's WeeeFlowers 1.7.2b.zip)
UC ReiMinimap{1.7.10} Rei's Minimap
UC TragicMC{2.46.2858} TragicMC 2
UC tc{4.3.0_003} Traincraft
UC warpbook{2.0.null} Warp Book
UC weaponmod{v1.14.3} Balkon's WeaponMod
UC witchery{0.24.1} Witchery
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.5.0 NVIDIA 372.54' Renderer: 'GeForce GTX 970/PCIe/SSE2'
Mantle Environment: DO NOT REPORT THIS CRASH! Unsupported mods in environment: optifine
TConstruct Environment: Environment healthy.

@jimmykotaro Next time paste this inside a Spoiler.

TC has NO Problem with Tinkers. As you can see in your paste UC tc{4.3.0_003} C stands for constructed while everything related to Tinkers got and UE. E stands for Error. We're not even mentioned in that crashlog.

ok thank you I will go with tinker guys to check it hehe :p , and sorry for the no spoiler but I didnt find the spoiler button :s

@jimmykotaro you need to do it on your own with opening and closing "details" with <>

@jimmykotaro well we "fixed" this now. We just prevent it from crashing. Funny RF Api bug.