Moderator Note
For some people, reinstalling fixes this issue. To do so, press your Windows+R keys, type in %AppData% at the dialog, and press Enter. In the window that appears, open the .minecraft directory, and delete everything except for the saves directory that you see therein. Then, try running Minecraft again.
[19:48:42] [Client thread/INFO]: Setting user: <username>
Exception in thread "Client thread" com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1
at com.google.gson.Gson.fromJson(Gson.java:815)
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: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1
at com.google.gson.stream.JsonReader.beginArray(JsonReader.java:338)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:79)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:60)
at com.google.gson.Gson.fromJson(Gson.java:803)
... 7 moreLinked issues
is duplicated by 57
MC-78220
game won't start from launcher 1.6.11
Resolved
MC-78225
keeps saying already playing when it is not
Resolved
MC-78256
I dont know what this means but my Son can't log in or play
Resolved
MC-78263
My Minecraft Launcher Keeps Crashing
Resolved
MC-78280
Crash Report
Resolved
MC-78348
Java error
Resolved
MC-78477
Minecraft is not launching properly
Resolved
MC-78612
Can't launch game, thrown into loop,
Resolved
MC-78702
Minecraft Launcher not opening game
Resolved
MC-78731
Will not open any version of game.
Resolved
MC-78804
Cannot play-error message below
Resolved
MC-78876
Game crashes (or something) when I click play in laucher
Resolved
MC-78947
cant play!!
Resolved
MC-79056
MineCraft 1.8.3 won't lauch Windows 8.1
Resolved
MC-79315
It's not letting me on 1.8 or above
Resolved
MC-79412
Error when starting 1.8.3 from Launcher
Resolved
MC-79464
Getting a Java code error when Pressing the play button on Minecraft
Resolved
MC-79491
can not get minecraft to load at all
Resolved
MC-79564
i can not run the game
Resolved
MC-79588
Minecraft won't launch after hitting play, Java error?
Resolved
MC-79599
java state exception
Resolved
MC-86670
Server crash on startup
Resolved
MC-99769
Crash on server Startup
Resolved
MC-107118
I can not use MineCraft!!!!
Resolved
MC-120471
cant load any worlds
Resolved
MCL-3470
Exception in thread "Client thread" com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1
Resolved
MCL-3474
Game doesn´t start. After clicking "play" their comes a game output tab
Resolved
MCL-3475
updTED minecraft and launcher and java cannot start game
Resolved
MCL-3488
Stating I am already playing when I try to get into the game from the Launcher
Resolved
MCL-3492
Clicking Play Brings me back to launcher page repeatedly
Resolved
MCL-3504
Game will not launch
Resolved
MCL-3548
Can not play game
Resolved
MCL-3560
Expected BEGIN_ARRAY but was STRING at line 1 column 1
Resolved
MCL-3565
Launcher Error
Resolved
MCL-3569
Client thread
Resolved
MCL-3582
can't connect
Resolved
MCL-3586
Can't Launch Minecraft Java Error Pops Up
Resolved
MCL-7608
Minecraft Crash.
Resolved
MC-3470
I cant log in please help!!!!!!
Resolved
MC-3474
witch do not die of suffocation
Resolved
MC-3475
Language Files
Resolved
MC-3488
Cannot destroy ender crystal with weakness
Resolved
MC-3504
What is the "motd" in the server properties?
Resolved
MC-3560
Minecart Shake
Resolved
MC-3565
Endermen don't open their mouth when attacked by other mobs
Resolved
MC-3569
Iron Golems move their arms up and down with no mob
Resolved
MC-3582
Trapdoors are not toggled by pressure plates on slabs
Resolved
MC-3586
Updated multiplayer server to 1.4.5. I am playing on peaceful but am seeing the monsters flicker in and out of the playing field.
Resolved
MC-7608
You can place Blocks behind stairs
Resolved
MC-75587
Minecraft 1.8 will Log In but Will Not Play
Resolved
MC-75743
Crash
Resolved
MC-75745
crash
Resolved
MC-76242
starting minecraft 1.8 just crashes the game
Resolved
MC-76708
minecraft server won't start
Resolved
MC-78083
Weird Crashes
Resolved
MC-78153
Sends to game output when I press play
Resolved
MC-78165
Minecraft won't go to start up menu in game when I hit play in launcher
Resolved
Attachments
Comments 19
Sorry Mustek, but it looks like this is an error in a JSON file somewhere, therefore an issue with the game (also note Exception in thread "Client thread"). Considering it gives an error right at startup, it's probably not a resource pack issue.
No, it's an actual issue which many people suffer from.
Reopened and redesigned.
will it delete my servers? it did delete them 😞
Having the same issues. I have tried uninstalling and reinstalling. Still receiving the same errors.
Exception in thread "Client thread" com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1
at com.google.gson.Gson.fromJson(Gson.java:815)
at com.google.gson.Gson.fromJson(Gson.java:768)
at lu.b(SourceFile:151)
at lu.<init>(SourceFile:43)
at net.minecraft.server.MinecraftServer.<init>(SourceFile:155)
at bpp.<init>(SourceFile:41)
at avf.<init>(SourceFile:293)
at net.minecraft.client.main.Main.main(SourceFile:124)
Caused by: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 1
at com.google.gson.stream.JsonReader.beginArray(JsonReader.java:338)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:79)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:60)
at com.google.gson.Gson.fromJson(Gson.java:803)
... 7 more
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future releasethank you! This worked!
For some people, reinstalling fixes this issue. To do so, press your Windows+R keys, type in %AppData% at the dialog, and press Enter. In the window that appears, open the .minecraft directory, and delete everything except for the saves directory that you see therein. Then, try running Minecraft again
Randomly started getting this error this morning (nothing changed other than what the launcher downloads).
Deleting everything but my saves/screenshots and re-installing did resolve it but felt a bit heavy-handed. Kind of curious how some people are randomly getting runtime syntax errors.
I uninstalled and reinstalled the game. That still didnt work is that the same as what is mentioned above? I dont know anything about this game as my kids are the ones who play it. Im just the one who paid for it.
Does deleting the usercache.json file in the server directory solve the problem?
Deleted the files per the moderator's recommendation- Minecraft is still not running
Rachel, did you also delete the usercache.json file that Mojang recommended?
Where can that be found? I deleted all of them except for save files in the %AppData% .minecraft section.
Go into the .minecraft folder and scroll all the way down. Most likely, it'll be under textures_4.png.
If you're still stuck, this should help: http://minecraft.gamepedia.com/.minecraft
Thank you. For mine, I am sorry that it was a duplicate issue report. But following this advice, it worked
Reoccurred in 1.8.6, here's a screenshot
This issue is occurring on my MC 1.9 server.
I have tried deleting the usercache.json
Still does not work.
I fixed this issue on my 1.10 server by deleting all of the .json files. However, when I try to join, I get the same error as if the server was not up (java.net.ConnectException: Connection refused: no further information: ). However, the server seems to be running fine...
EDIT: When I checked server.properties, all the settings were reset/messed up. I can join fine now.
Is this still an issue in the latest snapshot 16w44a? If so please update the affected versions.
This is an automated comment on any open or reopened issue with out-of-date affected versions.
Is this still a issue in the latest version of the game(currently 1.13.1)?
If so, please add it to the affected versions, thanks!
This is a technical support issue; this site is for bug reports only. For technical support please use the Mojang Support Center.