Minecraft will not load whilst on forge profile?

[LaurenTheWhale]

Okay, so yesterday, I was playing on minecraft, as usual, on my forge 1.7.2 client. Then today, when I have just tried to play with forge 1.7.2, it loads, and then doesn't open up Minecraft. On the launcher it clearly looks as if it's going to work but then nothing happens. It did this the other day too but the next day it was fine. Do I need to restart my computer?

 

Note: I have got both forge 1.7.2 and forge 1.7.10 profiles on my launcher so I was also wondering if this would be a problem?

 

Thank you if you do help me in any way. If more information is needed then I will make sure to provide it as soon as possible.

[LaurenTheWhale]

There's no crash log or anything that comes up, it's just that nothing happens. And I searched in the logs in .minecraft and nothing is there :c

 

[LaurenTheWhale]

[19:40:03] [main/INFO] [FML/]: Forge Mod Loader version 7.2.156.1060 for Minecraft 1.7.2 loading

[19:40:03] [main/INFO] [FML/]: Java is Java HotSpot Client VM, version 1.8.0_25, running on Windows 8.1:x86:6.3, installed at C:\Program Files (x86)\Java\jre1.8.0_25

[19:40:03] [main/DEBUG] [FML/]: Java classpath at launch is C:\Users\user\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.7.2-10.12.1.1060\forge-1.7.2-10.12.1.1060.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.9\launchwrapper-1.9.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.10.2\scala-library-2.10.2.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.10.2\scala-compiler-2.10.2.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.3\authlib-1.3.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\user\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\user\AppData\Roaming\.minecraft\versions\1.7.2-Forge10.12.1.1060\1.7.2-Forge10.12.1.1060.jar

[19:40:03] [main/DEBUG] [FML/]: Java library path at launch is C:\Users\user\AppData\Roaming\.minecraft\versions\1.7.2-Forge10.12.1.1060\1.7.2-Forge10.12.1.1060-natives-2157034485159

[19:40:03] [main/DEBUG] [FML/]: Enabling runtime deobfuscation

[19:40:03] [main/DEBUG] [FML/]: Instantiating coremod class FMLCorePlugin

[19:40:03] [main/DEBUG] [FML/]: Added access transformer class cpw.mods.fml.common.asm.transformers.AccessTransformer to enqueued access transformers

[19:40:03] [main/DEBUG] [FML/]: Enqueued coremod FMLCorePlugin

[19:40:03] [main/DEBUG] [FML/]: Instantiating coremod class FMLForgePlugin

[19:40:03] [main/DEBUG] [FML/]: Added access transformer class net.minecraftforge.transformers.ForgeAccessTransformer to enqueued access transformers

[19:40:03] [main/DEBUG] [FML/]: Enqueued coremod FMLForgePlugin

[19:40:03] [main/DEBUG] [FML/]: All fundamental core mods are successfully located

[19:40:03] [main/DEBUG] [FML/]: Discovering coremods

[19:40:03] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.7.2]bspkrsCore-universal-6.0(1.7.2).jar

[19:40:03] [main/DEBUG] [FML/]: Not found coremod data in [1.7.2]bspkrsCore-universal-6.0(1.7.2).jar

[19:40:03] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.7.2]TreeCapitator-universal-1.7.2.r01.jar

[19:40:03] [main/DEBUG] [FML/]: Not found coremod data in [1.7.2]TreeCapitator-universal-1.7.2.r01.jar

[19:40:03] [main/DEBUG] [FML/]: Examining for coremod candidacy All-U-Want 2.0 beta.jar

[19:40:03] [main/DEBUG] [FML/]: Not found coremod data in All-U-Want 2.0 beta.jar

[19:40:03] [main/DEBUG] [FML/]: Examining for coremod candidacy EnhancedPortals-1.7.2-3.0.0b6c.jar

[19:40:03] [main/DEBUG] [FML/]: Not found coremod data in EnhancedPortals-1.7.2-3.0.0b6c.jar

[19:40:03] [main/DEBUG] [FML/]: Examining for coremod candidacy MrCrayfishFurnitureModv3.4(1.7.2).jar

[19:40:04] [main/DEBUG] [FML/]: Not found coremod data in MrCrayfishFurnitureModv3.4(1.7.2).jar

[19:40:04] [main/DEBUG] [FML/]: Examining for coremod candidacy ShadersModCore-v2.3.12-mc1.7.2-f1040.jar

[19:40:04] [main/INFO] [FML/]: Loading tweaker shadersmodcore.loading.SMCTweaker from ShadersModCore-v2.3.12-mc1.7.2-f1040.jar

[19:40:04] [main/DEBUG] [FML/]: Examining for coremod candidacy TooManyItems2014_01_13_1.7.2_Forge.jar

[19:40:04] [main/TRACE] [FML/]: Adding TooManyItems2014_01_13_1.7.2_Forge.jar to the list of known coremods, it will not be examined again

[19:40:04] [main/DEBUG] [FML/]: Instantiating coremod class TMIForgeLoader

[19:40:04] [main/DEBUG] [FML/]: The coremod TMIForgeLoader requested minecraft version 1.7.2 and minecraft is 1.7.2. It will be loaded.

[19:40:04] [main/DEBUG] [FML/]: Enqueued coremod TMIForgeLoader

[19:40:04] [main/DEBUG] [FML/]: Examining for coremod candidacy WorldEdit.jar

[19:40:04] [main/DEBUG] [FML/]: Not found coremod data in WorldEdit.jar

[19:40:04] [main/INFO] [LaunchWrapper/]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker

[19:40:04] [main/INFO] [LaunchWrapper/]: Loading tweak class name shadersmodcore.loading.SMCTweaker

[19:40:04] [main/INFO] [LaunchWrapper/]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker

[19:40:04] [main/INFO] [LaunchWrapper/]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker

[19:40:04] [main/ERROR] [LaunchWrapper/]: Unable to launch

java.util.ConcurrentModificationException

at java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[?:1.8.0_25]

at java.util.ArrayList$Itr.remove(Unknown Source) ~[?:1.8.0_25]

at net.minecraft.launchwrapper.Launch.launch(Launch.java:117) [launchwrapper-1.9.jar:?]

at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]

 

 

 

I think this could be it, I don't know. I noticed it says "Unable to launch" at the bottom, but I'm not sure why as I don't really know how to interpret logs.

[LexManos]

Update to 1.7.10.