My minecraft wont launch - Java Edition Support - Support - Minecraft Forum

#1 Nov 24, 2014

MCDarktoon

Out of the Water
Join Date: 11/25/2014
Posts: 2
Member Details

My minecraft wont launch when i use the minecraft launcher in unmodded minecraft. I get a this crash report

[21:46:35] [Client thread/INFO]: Setting user: MCDarktoon
[21:46:35] [Client thread/INFO]: (Session ID is token:975ca20360dd4f8b9fbe259d372a87ef:42c349de205944109003df2a1d7e8b9b)
Exception in thread "Client thread" com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Expected ':' at line 1 column 8196
at com.google.gson.internal.Streams.parse(Streams.java:56)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:54)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:81)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:60)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:768)
at sa.b(SourceFile:148)
at sa.<init>(SourceFile:42)
at net.minecraft.server.MinecraftServer.<init>(SourceFile:154)
at cyk.<init>(SourceFile:40)
at bss.<init>(SourceFile:285)
at net.minecraft.client.main.Main.main(SourceFile:124)
Caused by: com.google.gson.stream.MalformedJsonException: Expected ':' at line 1 column 8196
at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1505)
at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:519)
at com.google.gson.stream.JsonReader.peek(JsonReader.java:414)
at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:644)
at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:667)
at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:642)
at com.google.gson.internal.Streams.parse(Streams.java:44)
... 12 more
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

I can access minecraft through forge but when i load a save it crashes and I get this

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 11/24/14 9:48 PM
Description: Starting integrated server

com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Expected ':' at line 1 column 8196
at com.google.gson.internal.Streams.parse(Streams.java:56)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:54)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:81)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:60)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:768)
at net.minecraft.server.management.PlayerProfileCache.func_152657_b(SourceFile:156)
at net.minecraft.server.management.PlayerProfileCache.<init>(SourceFile:42)
at net.minecraft.server.MinecraftServer.<init>(MinecraftServer.java:142)
at net.minecraft.server.integrated.IntegratedServer.<init>(IntegratedServer.java:45)
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2080)
at cpw.mods.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:669)
at net.minecraft.client.gui.GuiSelectWorld.func_146615_e(GuiSelectWorld.java:183)
at net.minecraft.client.gui.GuiSelectWorld.func_146284_a(GuiSelectWorld.java:130)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:296)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1629)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:962)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)
at net.minecraft.client.main.Main.main(SourceFile:148)
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: com.google.gson.stream.MalformedJsonException: Expected ':' at line 1 column 8196
at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1505)
at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:519)
at com.google.gson.stream.JsonReader.peek(JsonReader.java:414)
at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:644)
at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:667)
at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:642)
at com.google.gson.internal.Streams.parse(Streams.java:44)
... 27 more

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

-- Head --
Stacktrace:
at com.google.gson.internal.Streams.parse(Streams.java:56)
at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:54)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:81)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:60)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:768)
at net.minecraft.server.management.PlayerProfileCache.func_152657_b(SourceFile:156)
at net.minecraft.server.management.PlayerProfileCache.<init>(SourceFile:42)
at net.minecraft.server.MinecraftServer.<init>(MinecraftServer.java:142)
at net.minecraft.server.integrated.IntegratedServer.<init>(IntegratedServer.java:45)

-- Starting integrated server --
Details:
Level ID: New World ds
Level Name: New World ds
Stacktrace:
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2080)
at cpw.mods.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:669)
at net.minecraft.client.gui.GuiSelectWorld.func_146615_e(GuiSelectWorld.java:183)
at net.minecraft.client.gui.GuiSelectWorld.func_146284_a(GuiSelectWorld.java:130)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:296)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)

-- Affected screen --
Details:
Screen name: net.minecraft.client.gui.GuiMainMenu
Stacktrace:
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1629)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:962)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)
at net.minecraft.client.main.Main.main(SourceFile:148)
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)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 166419608 bytes (158 MB) / 243531776 bytes (232 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
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 v7.10.85.1230 Minecraft Forge 10.13.2.1230 3 mods loaded, 3 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
FML{7.10.85.1230} [Forge Mod Loader] (forge-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Forge{10.13.2.1230} [Minecraft Forge] (forge-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Launched Version: 1.7.10-Forge10.13.2.1230
LWJGL: 2.9.1
OpenGL: ATI Radeon HD 4200 GL version 2.1.8870, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because ARB_framebuffer_object is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

Thank you guys :iapprove:

#2 Nov 24, 2014

gerbil

Enderman Ender
Join Date: 6/3/2011
Posts: 8,485
Member Details

Looks like a json file is corrupted. Probably either .minecraft/usercache.json or .minecraft/saves/<Your Save>/stats/<whatever>.json

Both of these contain some state information that you will lose but you probably will need to delete the damaged file to move on.

If the problem occurs for one save only, then it's probably the stats file. If for a new world, then it's probably the usercache

#3 Nov 25, 2014

MCDarktoon

Out of the Water
Join Date: 11/25/2014
Posts: 2
Member Details

Thank you, you are beast. It was the user cahce.