while accessing registry.gimp.org got following error:

URL 
     /index.jsp?null 
Error-Type 
     class java.lang.ClassNotFoundException 
Backtrace 

             java.lang.ClassNotFoundException: class
org.gimp.registry.Registry : de.fargonauten.db.InvalidStateException:
Servlet not initialized.
             at java.beans.Beans.instantiate(Beans.java:208)
             at java.beans.Beans.instantiate(Beans.java:48)
             at index_3._jspService(index_3.java:66)
             at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java)
             at javax.servlet.http.HttpServlet.service(HttpServlet.java)
             at
org.apache.tomcat.facade.ServletHandler.doService(ServletHandler.java)
             at org.apache.tomcat.core.Handler.invoke(Handler.java)
             at org.apache.tomcat.core.Handler.service(Handler.java)
             at
org.apache.tomcat.facade.ServletHandler.service(ServletHandler.java)
             at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java)
             at
org.apache.tomcat.core.ContextManager.service(ContextManager.java)
             at
org.apache.tomcat.modules.server.Ajp13Interceptor.processConnection(Ajp13Interceptor.java)
             at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java)
             at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java)
             at java.lang.Thread.run(Thread.java:536)