What could this error mean?

[gio]

L2J Revision [3968]:
L2JDP Revision [7120]:

My server don't start because of this:

Exception in thread "main" java.lang.NoClassDefFoundError: com/l2jserver/gameserver/GameServer
Caused by: java.lang.ClassNotFoundException: com.l2jserver.gameserver.GameServer
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: com.l2jserver.gameserver.GameServer. Program will exit.

libs folder is there..
any ideas?

[_DS_]

jar was damaged/absent.

[gio]

aww thank you ds.. i think my compiler is kidding me..