:: Please read this before commenting ::
(Note: I have searched for similar problems but have found nothing related)
:: Start up Batch File ::
java -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=2 -XX:+AggressiveOpts -Xms500M -Xmx1000M -d64 -jar minecraft_server.14w11b.jar -d64
pause
(Note: pause was used to identify problems)
:: Log ::
[01:38:25] [main/FATAL]: Failed to start the minecraft server
com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected B
EGIN_ARRAY but was STRING at line 1 column 1
at com.google.gson.Gson.fromJson(Gson.java:815) ~[minecraft_server.14w11
b.jar:?]
at com.google.gson.Gson.fromJson(Gson.java:768) ~[minecraft_server.14w11
b.jar:?]
at oy.b(SourceFile:141) ~[minecraft_server.14w11b.jar:?]
at oy.<init>(SourceFile:43) ~[minecraft_server.14w11b.jar:?]
at net.minecraft.server.MinecraftServer.<init>(SourceFile:120) ~[minecra
ft_server.14w11b.jar:?]
at mz.<init>(SourceFile:41) ~[minecraft_server.14w11b.jar:?]
at net.minecraft.server.MinecraftServer.main(SourceFile:629) [minecraft_
server.14w11b.jar:?]
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) ~[m
inecraft_server.14w11b.jar:?]
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.re
ad(CollectionTypeAdapterFactory.java:79) ~[minecraft_server.14w11b.jar:?]
at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.re
ad(CollectionTypeAdapterFactory.java:60) ~[minecraft_server.14w11b.jar:?]
at com.google.gson.Gson.fromJson(Gson.java:803) ~[minecraft_server.14w11
b.jar:?]
... 6 more
C:(Directory Here)>pause
Press any key to continue . . .
:: Notes ::
I have been using this version of Minecraft for a while and the server has recently stopped working.
Linked issues
Attachments
Comments

You must not realize that the client now has the multiplayer server integrated into it. Still a duplicate issue.

@Talven81 Whoops. just checked the error reports and just realized its the same thing, ("BEGIN_ARRAY but was STRING at line 1 column 1") my bad. hope the problem gets fixed soon.

UPDATE: deleted the server config and everything except the mcserver jar and the world and the startup batch and it started working again.
This is NOT a duplicate problem, My standard Minecraft files work just fine but the server still doesn't work so this is not resolved and its not the same as MC-51590 that problem only applies to client based files.