Please HELP | java.lang.OutOfMemoryError: PermGen space

I bought a 4GB Ram server from GGservers and I installed Crackpack 1.5.1.0
When I start the server It will load up everything and then shut down before anyone can connect.
I know near nothing about this stuff and I'm hopeless by myself.

This are the last lines in my logs

2014-07-14 22:19:33 [SEVERE] [ForgeModLoader] The following problems were captured during this phase
2014-07-14 22:19:34 [INFO] [STDERR] java.lang.OutOfMemoryError: PermGen space
2014-07-14 22:19:34 [SEVERE] [Minecraft-Server] Encountered an unexpected exception OutOfMemoryError
java.lang.OutOfMemoryError: PermGen space
2014-07-14 22:19:35 [INFO] [Minecraft-Server] Stopping server
2014-07-14 22:19:35 [INFO] [Minecraft-Server] Saving worlds
2014-07-14 22:19:35 [INFO] [STDERR] java.net.SocketException: Socket closed
2014-07-14 22:19:35 [INFO] [STDERR] at java.net.PlainSocketImpl.socketAccept(Native Method)
2014-07-14 22:19:35 [INFO] [STDERR] at java.net.AbstractPlainSocketImpl.accept(Unknown Source)
2014-07-14 22:19:35 [INFO] [STDERR] at java.net.ServerSocket.implAccept(Unknown Source)
2014-07-14 22:19:35 [INFO] [STDERR] at java.net.ServerSocket.accept(Unknown Source)
2014-07-14 22:19:35 [INFO] [STDERR] at net.minecraft.server.ServerListenThread.run(ServerListenThread.java:80)
2014-07-14 22:19:35 [INFO] [STDERR] Exception in thread "Server thread" java.lang.OutOfMemoryError: PermGen space
2014-07-14 22:19:35 [INFO] [Minecraft-Server] Closing listening thread
2014-07-14 22:19:58 [INFO] [STDERR] Exception in thread "Thread-7" java.lang.NoClassDefFoundError: net/minecraft/command/ServerCommand
2014-07-14 22:19:58 [INFO] [STDERR] at net.minecraft.server.dedicated.DedicatedServer.func_71331_a(DedicatedServer.java:307)
2014-07-14 22:19:58 [INFO] [STDERR] at net.minecraft.server.dedicated.DedicatedServerCommandThread.run(SourceFile:81)
2014-07-14 22:19:58 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: net.minecraft.command.ServerCommand
2014-07-14 22:19:58 [INFO] [STDERR] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186)
2014-07-14 22:19:58 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2014-07-14 22:19:58 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2014-07-14 22:19:58 [INFO] [STDERR] ... 2 more
2014-07-14 22:19:58 [INFO] [STDERR] Caused by: java.lang.OutOfMemoryError: PermGen space

 

The “java.lang.OutOfMemoryError: PermGen space” message indicates that the Permanent Size area in memory is exhausted. If we have exhausted the PermGen area in the memory you need to increase its size. This solution is indeed helpful if you just have not given your JVM enough elbow room. So you can try to alter your application launch configuration and add (or increase if present) the following:
-XX:MaxPermSize=512m

For more detailed information about your problem or possible solutions you can find from plumbr.eu (https://plumbr.eu/outofmemoryerror/permgen-space)

 

Locked.
Seek help where you acquired your server mod.