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Okay, so I have set up and installed forge on Minecraft and I have all the mods I need. I'm running the following mods:

Greggs sg craft 1.8.9-1.13.2

Better records 1.8.9-1.3.0

Computercraft 1.8.9-1.79

Tinkers Construct 1.8.9-2.2.1

Thaumcraft 1.8.9-5.2.4

when I try to load up the game it gives this error message. it says unsupported format but they are the latest versions, help?

---- Minecraft Crash Report ----

*** ATTENTION: detected classes with unsupported format ***

*** DO NOT SUBMIT THIS CRASH REPORT TO FORGE ***

Contact authors of the following mods:

SGCraft

mantle

WARNING: coremods are present:

ThaumcraftLoader (Thaumcraft-1.8.9-5.2.4.jar)

Contact their authors BEFORE contacting forge

// Don't be sad. I'll do better next time, I promise!

Time: 5/13/17 7:46 PM

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

net.minecraftforge.fml.common.LoaderException: java.lang.ClassNotFoundException: gcewing.sg.SGCraft

at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:162)

at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:543)

at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)

at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:417) at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)

at net.minecraft.client.main.Main.main(SourceFile:124) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source) at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

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

Caused by: java.lang.ClassNotFoundException: gcewing.sg.SGCraft

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source) at net.minecraftforge.fml.common.ModClassLoader.loadClass(ModClassLoader.java:65)

at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source)

at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:468)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source)

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 net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:211)

at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:189)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source)

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 net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118)

at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:512)

... 10 more

Caused by: java.lang.UnsupportedClassVersionError: gcewing/sg/SGCraft : Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(Unknown Source)

at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source)

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

... 38 more

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

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

-- System Details --

Details: Minecraft Version: 1.8.9

Operating System: Windows 7 (x86)

version 6.1 Java Version: 1.6.0_20, Sun Microsystems Inc.

Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.

Memory: 107438240 bytes (102 MB) / 298434560 bytes (284 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: 0, tallocated: 0

FML: MCP 9.19 Powered by Forge 11.15.1.1902 10 mods loaded, 10 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{9.19} [Minecraft Coder Pack] (minecraft.jar)

UC FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.1902-1.8.9.jar)

UC Forge{11.15.1.1902} [Minecraft Forge] (forge-1.8.9-11.15.1.1902-1.8.9.jar)

UC betterrecords{1.8.9-1.3.0} [Better Records] (betterrecords-1.8.9-1.3.0.jar)

UC ComputerCraft{1.79} [ComputerCraft] (ComputerCraft1.79.jar)

UE SGCraft{1.13.2} [Greg's SG Craft] (SGCraft-1.13.2-mc1.8.9.jar)

UE mantle{1.8.9-0.9.0.jenkins97} [Mantle] (Mantle-1.8.9-0.9.0.jar)

UE tconstruct{1.8.9-2.2.1.jenkins1005} [Tinkers' Construct] (TConstruct-1.8.9-2.2.1.jar)

UC Baubles{1.1.3.0} [Baubles] (Baubles-1.8.9-1.1.3.0.jar)

UC Thaumcraft{5.2.4} [Thaumcraft] (Thaumcraft-1.8.9-5.2.4.jar)

Loaded coremods (and transformers):

ThaumcraftLoader (Thaumcraft-1.8.9-5.2.4.jar)

GL info: ' Vendor: 'Intel' Version: '3.0.0 - Build 8.15.10.2255' Renderer: 'Intel(R) HD Graphics Family'

that might work, thanks!

nope, it didn't