Solved Bukkit Crash

Every time I try to start my minecraft server, I would get this message:

[23:47:48 INFO]: Starting minecraft server version 1.7.9
[23:47:48 INFO]: Loading properties
[23:47:48 INFO]: Default game type: SURVIVAL
[23:47:48 INFO]: Generating keypair
[23:47:48 INFO]: Starting Minecraft server on *:19967
[23:47:49 INFO]: This server is running CraftBukkit version git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks (MC: 1.7.9) (Implementing API version 1.7.9-R0.3-SNAPSHOT)
[23:47:49 INFO]: [TimTheEnchanter] Loading TimTheEnchanter v3.0
[23:47:49 INFO]: [RenamePlus] Loading RenamePlus v1.1
[23:47:49 INFO]: [WorldEdit] Loading WorldEdit v5.6.1
[23:47:49 INFO]: [PlotMe] Loading PlotMe v0.13f
[23:47:49 INFO]: [PlayerHeads] Loading PlayerHeads v3.8-jenkins-PlayerHeads-1-48-ged24b6b
[23:47:49 INFO]: [Multiverse-Core] Loading Multiverse-Core v2.4-b527
[23:47:49 INFO]: [AutoSaveWorld] Loading AutoSaveWorld v4.13
[23:47:49 INFO]: [Essentials] Loading Essentials v2.12.2
[23:47:49 INFO]: [EssentialsChat] Loading EssentialsChat v2.12.2
[23:47:49 INFO]: [EssentialsProtect] Loading EssentialsProtect v2.12.2
[23:47:49 INFO]: [EssentialsSpawn] Loading EssentialsSpawn v2.12.2
[23:47:49 INFO]: [EssentialsAntiBuild] Loading EssentialsAntiBuild v2.12.2
[23:47:49 INFO]: [PlotMe] Enabling PlotMe v0.13f
[23:47:51 INFO]: PlotMe 5 plots loaded
[23:47:51 INFO]: [AutoSaveWorld] Enabling AutoSaveWorld v4.13
[23:47:51 ERROR]: Encountered an unexpected exception
net.minecraft.util.com.google.gson.JsonSyntaxException: net.minecraft.util.com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 4
at net.minecraft.util.com.google.gson.Gson.assertFullConsumption(Gson.java:779) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.util.com.google.gson.Gson.fromJson(Gson.java:769) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.server.v1_7_R3.JsonList.load(JsonList.java:148) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.server.v1_7_R3.DedicatedPlayerList.y(SourceFile:99) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.server.v1_7_R3.DedicatedPlayerList.<init>(SourceFile:25) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:126) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:436) [craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
Caused by: net.minecraft.util.com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 4
at net.minecraft.util.com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1505) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.util.com.google.gson.stream.JsonReader.checkLenient(JsonReader.java:1386) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.util.com.google.gson.stream.JsonReader.doPeek(JsonReader.java:531) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.util.com.google.gson.stream.JsonReader.peek(JsonReader.java:414) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
at net.minecraft.util.com.google.gson.Gson.assertFullConsumption(Gson.java:775) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
... 7 more
[23:47:51 ERROR]: This crash report has been saved to: /Users/chrisk/Desktop/./crash-reports/crash-2014-07-06_23.47.51-server.txt
[23:47:53 INFO]: ----- Bukkit Auto Updater -----
[23:47:53 INFO]: It appears that you're running a Development Build, when you've specified in bukkit.yml that you prefer to run Recommended Builds.
[23:47:53 INFO]: If you would like to be kept informed about new Development Build releases, it is recommended that you change 'preferred-channel' in your bukkit.yml to 'dev'.
[23:47:53 INFO]: With that set, you will be told whenever a new version is available for download, so that you can always keep up to date and secure with the latest fixes.
[23:47:53 INFO]: If you would like to disable this warning, simply set 'suggest-channels' to false in bukkit.yml.
[23:47:53 INFO]: ----- ------------------- -----
>
Please help me. I tried deleting unused plug-ins, and tried upgraming to Recommended Builds. What am I doing wrong?

 

JsonSyntaxException
MalformedJsonException
malformed JSON at line 1 column 4

All this makes me think you have a .json file that is corrupted or you have edited it and messed something up. I don't see what actual file it is mad about but it is likely to be one of the files in your root server folder like one of the following:

banned-ips.json
banned-players.json
ops.json
usercache.json ( <-- likely culprit if you didn't edit any of these )

LHammonds

 

Had the same issue. Deleted the usercache.json file. Hopefully that'll do it.

 

Thank you! It was my banned-players.json file. I accidently put down a name, but it didn't ban him because I didn't have something in it. Thanks!