Can't create conference rooms

Hi, I am trying to create a conference room in our chat, but we get the following error

Exception:

java.lang.IllegalArgumentException: Illegal JID: server chat.localhost
     at org.xmpp.packet.JID.init(JID.java:396)
     at org.xmpp.packet.JID.(JID.java:231)
     at org.jivesoftware.openfire.component.InternalComponentManager.addComponent(InternalComponentManager.java:120)
     at org.jivesoftware.openfire.muc.MultiUserChatManager.registerMultiUserChatService(MultiUserChatManager.java:131)
     at org.jivesoftware.openfire.muc.MultiUserChatManager.createMultiUserChatService(MultiUserChatManager.java:191)
     at org.jivesoftware.openfire.admin.muc_002dservice_002dedit_002dform_jsp._jspService(muc_002dservice_002dedit_002dform_jsp.java:115)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
     at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
     at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
     at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
     at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:66)
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
     at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:42)
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
     at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:70)
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
     at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:146)
     at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
     at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
     at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
     at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
     at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
     at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
     at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
     at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
     at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
     at org.mortbay.jetty.Server.handle(Server.java:324)
     at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
     at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
     at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
     at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
     at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
     at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
     at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
Caused by: org.jivesoftware.stringprep.IDNAException: Contains non-LDH characters.
     at org.jivesoftware.stringprep.IDNA.toASCII(IDNA.java:106)
     at org.jivesoftware.stringprep.IDNA.toASCII(IDNA.java:46)
     at org.xmpp.packet.JID.init(JID.java:367)
     ... 36 more we are using the latest openfire on a debian linux with mysql.  it also had AD integration with a server 2k8
 AD Server

 how can I resolve this so I can create the conference rooms?

What name are you trying to set? As error says “illegal JID”, so maybe there is spaces or some special characters in the room’s name.