oh no what did i do

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\Owner>cd C:\MCLG

C:\MCLG>java -jar MinecraftLandGenerator.jar -conf
[MLG-ERROR] Archive Intergrity Check Failed: .zip file is older than BuildID. Of
fset: 10803sec.
[MLG-ERROR] Archive Intergrity Check Failed: (MLG will still run.  Just note tha
t this may not be an official version.)
[MLG] Minecraft Land Generator version 1.7.1
[MLG] BuildID: (1351324293000)
[MLG] This version was last modified on Saturday, October 27, 2012 at 3:51 AM, E
astern Daylight Time
[MLG]
[MLG] Uses a Minecraft server to generate square land of a specified size.
[MLG]
[MLG]
[MLG] MinecraftLandGenerator.conf file created.

C:\MCLG>java -client -showversion -Xms1024m -Xmx1024m -jar minecraft_server.jar
nogui
java version "1.7.0_07"
Java(TM) SE Runtime Environment (build 1.7.0_07-b11)
Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode)

208 recipes
27 achievements
2012-12-19 14:20:49 [INFO] Starting minecraft server version 1.4.5
2012-12-19 14:20:49 [INFO] Loading properties
2012-12-19 14:20:49 [INFO] Default game type: SURVIVAL
2012-12-19 14:20:49 [INFO] Generating keypair
2012-12-19 14:20:49 [INFO] Starting Minecraft server on *:25565
2012-12-19 14:20:49 [INFO] Preparing level "kikuo"
2012-12-19 14:20:50 [INFO] Preparing start region for level 0
2012-12-19 14:20:50 [INFO] Done (0.758s)! For help, type "help" or "?"
stop
2012-12-19 14:20:53 [INFO] Stopping the server
2012-12-19 14:20:53 [INFO] Stopping server
java.net.SocketException: socket closed
        at java.net.DualStackPlainSocketImpl.accept0(Native Method)
        at java.net.DualStackPlainSocketImpl.socketAccept(Unknown Source)
        at java.net.AbstractPlainSocketImpl.accept(Unknown Source)
        at java.net.PlainSocketImpl.accept(Unknown Source)
        at java.net.ServerSocket.implAccept(Unknown Source)
        at java.net.ServerSocket.accept(Unknown Source)
        at hu.run(SourceFile:66)
2012-12-19 14:20:53 [INFO] Saving players
Closing listening thread
2012-12-19 14:20:53 [INFO] Saving worlds
2012-12-19 14:20:53 [INFO] Saving chunks for level 'kikuo'/Overworld
2012-12-19 14:20:53 [INFO] Saving chunks for level 'kikuo'/Nether
2012-12-19 14:20:53 [INFO] Saving chunks for level 'kikuo'/The End
2012-12-19 14:20:53 [INFO] Stopping server

C:\MCLG>java -jar MinecraftLandGenerator.jar 1152 1152
[MLG-ERROR] Archive Intergrity Check Failed: .zip file is older than BuildID. Of
fset: 10803sec.
[MLG-ERROR] Archive Intergrity Check Failed: (MLG will still run.  Just note tha
t this may not be an official version.)
[MLG] Minecraft Land Generator version 1.7.1
[MLG] BuildID: (1351324293000)
[MLG] This version was last modified on Saturday, October 27, 2012 at 3:51 AM, E
astern Daylight Time
[MLG]
[MLG] Uses a Minecraft server to generate square land of a specified size.
[MLG]
[MLG]
[MLG-ERROR] There is a level_backup.dat file left over from a previous attempt t
hat failed.
[MLG] Resuming...
[MLG] Processing world ".\kikuo", in 380 block increments, with: java -Djava.awt
.headless=true -Djline.terminal=jline.UnsupportedTerminal -Duser.language=en -Xm
s1024m -Xmx1024m -Xincgc -jar minecraft_server.jar nogui
[MLG]
[MLG] Launching server once to make sure there is a world.
[Server] Starting minecraft server version 1.4.5
[MLG] kikuo: The Overworld:

[Server] Done (0.709s)
[MLG] Saving server data...
[MLG] Stopping server...  (Please Wait...)
[MLG]
[MLG] Backing up level.dat to level_backup.dat.
[MLG]
[MLG] Seed: 102051367
[MLG] Spawn point detected: [X,Y,Z] [-7,64,-297]
[MLG]
[MLG] Calculating Spawn Points...
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf(Unknown Source)
        at java.util.Arrays.copyOf(Unknown Source)
        at java.util.ArrayList.grow(Unknown Source)
        at java.util.ArrayList.ensureCapacityInternal(Unknown Source)
        at java.util.ArrayList.add(Unknown Source)
        at morlok8k.MinecraftLandGenerator.Main.runCLI(Main.java:590)
        at morlok8k.MinecraftLandGenerator.Main.main(Main.java:120)

C:\MCLG>