I'm a noob so this might be a stupid question but I don't know what to do it wont open forge.

 

Crash Report  :

 

The game crashed whilst there was a severe problem during mod loading that has caused the game to fail
Error: net.minecraftforge.fml.common.LoaderException: java.lang.NoClassDefFoundError: Lnet/minecraftforge/common/config/Configuration;

 

does this have something to do with the config? is it a mod I installed? idk just hook me up.

 

Other Info:

1.8 FML Forge

Replay Mod 1.8 installed

forge constructs 2/7 before crashing

it correctly sees all mods I have

3 hours ago, diesieben07 said:

• Stop using 1.8, it's outdated.
• That error should not occur with Forge 1.8, that class exists there. Please post the full log.

excuse can i ask how do you get the full log? im just getting it from the crash report in the launcher.

17 minutes ago, diesieben07 said:

logs/fml-client-latest.log.

---- Minecraft Crash Report ----
// Ouch. That hurt

Time: 7/30/17 2:49 PM
Description: Initializing game

java.lang.IllegalStateException: can't pop unfinished ProgressBar Rendering Setup
 at net.minecraftforge.fml.common.ProgressManager.pop(ProgressManager.java:35)
 at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:492)
 at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:326)
 at net.minecraft.client.main.Main.main(SourceFile:120)
 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)

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

-- Head --
Stacktrace:
 at net.minecraftforge.fml.common.ProgressManager.pop(ProgressManager.java:35)
 at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:492)

-- Initialization --
Details:
Stacktrace:
 at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:326)
 at net.minecraft.client.main.Main.main(SourceFile:120)
 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)

-- System Details --
Details:
 Minecraft Version: 1.8
 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: 389857936 bytes (371 MB) / 523501568 bytes (499 MB) up to 1060372480 bytes (1011 MB)
 JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
 IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
 FML: MCP v9.10 FML v8.0.127.1103 2 mods loaded, 2 mods active
 mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized
 FML{8.0.127.1103} [Forge Mod Loader] (fml-1.8-8.0.127.1103.jar) Unloaded->Constructed->Pre-initialized
 Loaded coremods (and transformers):
 GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.5.0 NVIDIA 376.53' Renderer: 'GeForce GTX 1080/PCIe/SSE2'
 Launched Version: 1.8-FML8.0.127.1103
 LWJGL: 2.9.1
 OpenGL: GeForce GTX 1080/PCIe/SSE2 GL version 4.5.0 NVIDIA 376.53, NVIDIA Corporation
 GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

 Using VBOs: Yes
 Is Modded: Definitely; Client brand changed to 'fml'
 Type: Client (map_client.txt)
 Resource Packs: []
 Current Language: English (US)
 Profiler Position: N/A (disabled)

Just now, diesieben07 said:

 

I'm using it because its the only version with good pvp that has good features above 1.6