Minecraft Forums

does anyone know how to fix this. here is my crash log



---- Minecraft Crash Report ----
// Oops.

Time: 1/27/15 7:44 AM
Description: Starting integrated server

com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 3188
at com.google.gson.Gson.assertFullConsumption(Gson.java:779)
at com.google.gson.Gson.fromJson(Gson.java:769)
at ns.b(SourceFile:156)
at ns.<init>(SourceFile:42)
at net.minecraft.server.MinecraftServer.<init>(SourceFile:114)
at bsx.<init>(SourceFile:38)
at bao.a(SourceFile:1610)
at bdx.e(SourceFile:162)
at bdx.a(SourceFile:127)
at bdw.a(SourceFile:172)
at bdw.k(SourceFile:232)
at bdw.p(SourceFile:211)
at bao.p(SourceFile:1328)
at bao.ak(SourceFile:774)
at bao.f(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:148)
Caused by: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 3188
at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1505)
at com.google.gson.stream.JsonReader.checkLenient(JsonReader.java:1386)
at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:531)
at com.google.gson.stream.JsonReader.peek(JsonReader.java:414)
at com.google.gson.Gson.assertFullConsumption(Gson.java:775)
... 15 more


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

-- Head --
Stacktrace:
at com.google.gson.Gson.assertFullConsumption(Gson.java:779)
at com.google.gson.Gson.fromJson(Gson.java:769)
at ns.b(SourceFile:156)
at ns.<init>(SourceFile:42)
at net.minecraft.server.MinecraftServer.<init>(SourceFile:114)
at bsx.<init>(SourceFile:38)

-- Starting integrated server --
Details:
Level ID: corglabs
Level Name: corglabs
Stacktrace:
at bao.a(SourceFile:1610)
at bdx.e(SourceFile:162)
at bdx.a(SourceFile:127)
at bdw.a(SourceFile:172)
at bdw.k(SourceFile:232)
at bdw.p(SourceFile:211)

-- Affected screen --
Details:
Screen name: bee
Stacktrace:
at bao.p(SourceFile:1328)
at bao.ak(SourceFile:774)
at bao.f(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:148)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 150539944 bytes (143 MB) / 199770112 bytes (190 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
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.7.10
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 8280 GL version 4.3.12618 Compatibility Profile Context 13.251.9001.0, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 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: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: [corgis corgi pack now with more naga from legend of korra]
Current Language: English (US)
Profiler Position: N/A (disabled)

You should Post this in the Unmodified Minecraft Client Support Section of Minecraft forums. Or if u are modded post it in the Modded Client Support forum of course.



~LordPriford

Try deleting %appdata%/.minecraft/usercache.json You will need to log in again afterward.

what does deleting the usercache.json do
my minercraft world used to be modded until I deleted the mods and the mod files still remain in it

This file is just a cache of account credentials, i.e. your account name and a session token. This is how you can play offline, as long as your session token is valid. Sometimes the file gets damaged, and you get the corrupted JSON error, but all the data is recoverable, you just need to log in again while connected to the internet.

I'm not a modder, your asking in the wrong sub forum.