[NUBass]

При регистрации сервера пишет
Exception in thread "main" java.lang.NoClassDefFoundError: net/sf/l2j/gsregistering/GameServerRegister
Caused by: java.lang.ClassNotFoundException: net.sf.l2j.gsregistering.GameServerRegister
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Error: Could not find the main class.
Error: A JNI error has occurred, please check your installation and try again
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первый такое вижу