Help C4 On Linux

[Razvan]

Hey..

i tried to open a server on linux (centos) she give me this error

Exception in thread "main" java.lang.ClassFormatError: net.sf.l2j.loginserver.LoginServer (unrecognized class file version)
   at java.lang.VMClassLoader.defineClass(libgcj.so.10)
   at java.lang.ClassLoader.defineClass(libgcj.so.10)
   at java.security.SecureClassLoader.defineClass(libgcj.so.10)
   at java.net.URLClassLoader.findClass(libgcj.so.10)
   at java.lang.ClassLoader.loadClass(libgcj.so.10)
   at java.lang.ClassLoader.loadClass(libgcj.so.10)
   at gnu.java.lang.MainThread.run(libgcj.so.10)

What can I do?

Edited May 5, 2014 by Universe

[Prims]

vezi daca liburile sunt puse bine ca spune ca nu gaseste liburile