[win10][java 1.8.0_131-b11][westeros craft launcher][OPEN]

[quintendeman]

I went through the troubleshooting guide and it failed to solve my problem. The launcher will launch, and I can successfully update everything. When I press launch minecraft it fails to do anything. In the log the error says:

Spoiler

[16:28:51] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[16:28:51] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[16:28:51] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[16:28:51] [main/INFO] [FML]: Forge Mod Loader version 13.20.1.2429 for Minecraft 1.11.2 loading
[16:28:51] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_131, running on Windows 10:amd64:10.0, installed at C:\Program Files\Java\jre1.8.0_131
[16:28:51] [main/WARN] [FML]: The coremod org.blockartistry.DynSurround.asm.TransformLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[16:28:51] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine.jar
[16:28:51] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:28:51] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker
[16:28:51] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[16:28:51] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:28:51] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[16:28:51] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker
[16:28:51] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: acceptOptions
[16:28:51] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: injectIntoClassLoader
[16:28:51] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine ClassTransformer
[16:28:51] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine URL: file:/C:/Users/quint/AppData/Roaming/WesterosCraft/instances/WesterosCraft-1.11.2/mods/OptiFine.jar
[16:28:51] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine ZIP file: C:\Users\quint\AppData\Roaming\WesterosCraft\instances\WesterosCraft-1.11.2\mods\OptiFine.jar
[16:28:51] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[16:28:54] [main/FATAL] [FML]: Patcher expecting non-empty class data file for net.minecraft.entity.SharedMonsterAttributes, but received empty.
[16:28:54] [main/ERROR] [LaunchWrapper]: Unable to launch
java.lang.RuntimeException: java.lang.RuntimeException: Patcher expecting non-empty class data file for net.minecraft.entity.SharedMonsterAttributes, but received empty, your vanilla jar may be corrupt.
at net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:170) ~[forge.jar:?]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper.jar:?]
Caused by: java.lang.RuntimeException: Patcher expecting non-empty class data file for net.minecraft.entity.SharedMonsterAttributes, but received empty, your vanilla jar may be corrupt.
at net.minecraftforge.fml.common.patcher.ClassPatchManager.applyPatch(ClassPatchManager.java:112) ~[forge.jar:?]
at net.minecraftforge.fml.common.patcher.ClassPatchManager.getPatchedResource(ClassPatchManager.java:75) ~[forge.jar:?]
at net.minecraftforge.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper.getFieldType(FMLDeobfuscatingRemapper.java:220) ~[forge.jar:?]
at net.minecraftforge.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper.parseField(FMLDeobfuscatingRemapper.java:193) ~[forge.jar:?]
at net.minecraftforge.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper.setup(FMLDeobfuscatingRemapper.java:162) ~[forge.jar:?]
at net.minecraftforge.fml.common.asm.FMLSanityChecker.injectData(FMLSanityChecker.java:189) ~[forge.jar:?]
at net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:165) ~[forge.jar:?]
... 2 more
Exception in thread "main" [16:28:54] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException
[16:28:54] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraftforge.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:49)
[16:28:54] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.SecurityManager.checkExit(Unknown Source)
[16:28:54] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.Runtime.exit(Unknown Source)
[16:28:54] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.System.exit(Unknown Source)
[16:28:54] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:138)
[16:28:54] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[16:28:54.586] Minecraft process terminated

"Patcher expecting non-empty class data file for net.minecraft.entity.SharedMonsterAttributes, but received empty."
How do I fix this?

 

[AerioOndos]

I have the same issue, I am going to try deleting and re-downloading the laucher