When trying to remove an item out of an item frame I get "Internal Server Error"?

I'm new to Bukkit and server hosting in general and I was making the spawn of my server and I want to use item frames for a market. I accidentally placed an item frame inside and item frame and I get kicked with "Internal Server Error" I try it again and I get the same message. I have tried removing item frames without anything in it and it is fine. I tried again with a stone axe and a wooden stair block and it returned the following error: "Internal Exception: java.io.Exception: An existing connection was forcibly closed by the remote host". Now, I don't know what this means but I know I did not close the server and there seem to be no differences in RAM usage or CPU when attempting to delete the item. I am running windows 7 however I am running the server off of STIPE servers.

List of plugins currently running:
Coreprotect
Essentials
EssentialsAntibuild
EssentialsChat
EssentialsGeoIP
EssentialsGroupManager
EssentialsProtect
EssentialsSpawn
EssentialsXMPP
Lockette
Orebfuscator
Worldborder
Worldguard
Worldedit

What I get when "Internal Server Error":

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7/29/2014 4:45 PM: [MC]: [16:45:14 WARN]: Failed to handle packet for /203.134.20.149:57991
7/29/2014 4:45 PM: [MC]: java.lang.NullPointerException
7/29/2014 4:45 PM: [MC]: at org.bukkit.event.entity.EntityDamageEvent.<init>(EntityDamageEvent.java:45) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf
6dffcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at org.bukkit.event.entity.EntityDamageByEntityEvent.<init>(EntityDamageByEntityEvent.java:26) ~[minecraft_server.jar:git-Bukkit-
1.7.9-R0.2-13-gf6dffcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:528) ~[minecraft_server.ja
r:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:446) ~[minecraft_server.
jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.handleNonLivingEntityDamageEvent(CraftEventFactory.java:573) ~[minecraf
t_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.EntityItemFrame.damageEntity(EntityItemFrame.java:27) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.
2-13-gf6dffcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.EntityHanging.j(EntityHanging.java:207) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-
b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.EntityHuman.attack(EntityHuman.java:894) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf
-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:1107) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf
6dffcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.PacketPlayInUseEntity.a(SourceFile:55) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b
3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.PacketPlayInUseEntity.handle(SourceFile:10) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6df
fcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:157) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffc
f-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.ServerConnection.c(SourceFile:134) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b3102j
nks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:667) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dff
cf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:258) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dff
cf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:558) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dff
cf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:469) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6d
ffcf-b3102jnks]
7/29/2014 4:45 PM: [MC]: at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dff
cf-b3102jnks]
7/29/2014 4:45 PM: [MC]: [16:45:14 INFO]: GreatTornado lost connection: Internal server error
7/29/2014 4:45 PM: [MC]: [16:45:14 INFO]: GreatTornado left the game.

What I get when "Internal Exception: java.io.Exception: An existing connection was forcibly closed by the remote host":

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7/29/2014 4:55 PM: [MC]: [16:55:50 WARN]: Failed to handle packet for /203.134.20.149:58733
7/29/2014 4:55 PM: [MC]: java.lang.NullPointerException
7/29/2014 4:55 PM: [MC]: at org.bukkit.event.entity.EntityDamageEvent.<init>(EntityDamageEvent.java:45) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf
6dffcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at org.bukkit.event.entity.EntityDamageByEntityEvent.<init>(EntityDamageByEntityEvent.java:26) ~[minecraft_server.jar:git-Bukkit-
1.7.9-R0.2-13-gf6dffcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:528) ~[minecraft_server.ja
r:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:446) ~[minecraft_server.
jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.handleNonLivingEntityDamageEvent(CraftEventFactory.java:573) ~[minecraf
t_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.EntityItemFrame.damageEntity(EntityItemFrame.java:27) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.
2-13-gf6dffcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.EntityHanging.j(EntityHanging.java:207) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-
b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.EntityHuman.attack(EntityHuman.java:894) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf
-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:1107) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf
6dffcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.PacketPlayInUseEntity.a(SourceFile:55) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b
3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.PacketPlayInUseEntity.handle(SourceFile:10) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6df
fcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:157) ~[minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffc
f-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.ServerConnection.c(SourceFile:134) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dffcf-b3102j
nks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:667) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dff
cf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:258) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dff
cf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:558) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dff
cf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:469) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6d
ffcf-b3102jnks]
7/29/2014 4:55 PM: [MC]: at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [minecraft_server.jar:git-Bukkit-1.7.9-R0.2-13-gf6dff
cf-b3102jnks]
7/29/2014 4:55 PM: [MC]: [16:55:50 INFO]: GreatTornado lost connection: Internal server error
7/29/2014 4:55 PM: [MC]: [16:55:50 INFO]: GreatTornado left the game.

help?

Here is my server.properties file:

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#Minecraft server properties
#Tue Jul 29 16:33:14 EST 2014
generator-settings=
op-permission-level=4
allow-nether=true
level-name=Fa-bu
enable-query=false
allow-flight=false
announce-player-achievements=true
server-port=censored
level-type=DEFAULT
enable-rcon=false
force-gamemode=false
level-seed=Fabulous
server-ip=censored
max-build-height=256
spawn-npcs=true
white-list=true
spawn-animals=true
snooper-enabled=true
hardcore=false
online-mode=true
resource-pack=
pvp=true
difficulty=1
server-name=Minecraft
enable-command-block=false
player-idle-timeout=0
gamemode=0
max-players=10
spawn-monsters=true
generate-structures=true
view-distance=10
spawn-protection=16
motd=hi

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I have this same issue.

 

Me too, have you guys found a fix yet?

 

Afraid not :/