Error loading localhost:8080/emml

[Meriem]

hello,
i've problem loading EMML examples.
Windows XP
JVM Version: 1.5.0_18
Tomcat Version: Apache Tomcat/5.5
installed Mashup Server following EMML guide.
im using a proxy so i moved emml.config in .../emml/WEB-INF/classes
and configured to hold a proxy

when i try to start emmclient from CLI i get the following error.
------
apache-tomcat@teox:~/webapps/emml/WEB-INF/classes$ java emmlclient
http://localhost:8080/emml/twitter
Invoking URL: http://localhost:8080/emml/twitter
Exception in thread "main" java.io.IOException: Server returned HTTP
response code: 500 for URL: http://localhost:8080/emml/twitter
at sun.net.www.protocol.http.HttpURLConnection.getInputStream
(Unknown Source)
at emmlclient.main(emmlclient.java:24)
------
if i try
apache-tomcat@teox:~/webapps/emml/WEB-INF/classes$ java emmlclient
http://search.twitter.com/search.atom?q='java'
Invoking URL: http://search.twitter.com/search.atom?q=java

and nothing happen..

------
if i write in browser http://localhost:8080/emml
it returns:

javax.servlet.ServletException: Load Mashups failednull
org.oma.emml.controller.EMMLServlet.init(EMMLServlet.java:33)
javax.servlet.GenericServlet.init(GenericServlet.java:212)
org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service
(CoyoteAdapter.java:293)

org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:
849)
org.apache.coyote.http11.Http11Protocol
$Http11ConnectionHandler.process(Http11Protocol.java:583)
org.apache.tomcat.util.net.JIoEndpoint
$Worker.run(JIoEndpoint.java:
454)
java.lang.Thread.run(Unknown Source)

root cause

java.net.MalformedURLException
java.net.URL.<init>(Unknown Source)
java.net.URL.<init>(Unknown Source)
java.net.URL.<init>(Unknown Source)

org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown
Source)

org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown
Source)
org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown
Source)
org.oma.emml.utils.XMLConversionUtils.getDocument
(XMLConversionUtils.java:71)

org.oma.emml.me.commons.EngineUtils.getRegisteredMashupServices
(EngineUtils.java:200)

org.oma.emml.me.runtime.MashupLoader.loadMashups(MashupLoader.java:
53)
org.oma.emml.me.runtime.MashupLoader.<init>(MashupLoader.java:
45)
org.oma.emml.me.runtime.EMMLService.<init>(EMMLService.java:
46)
org.oma.emml.me.runtime.EMMLServiceFactory.createService
(EMMLServiceFactory.java:43)
org.oma.emml.controller.EMMLServlet.init(EMMLServlet.java:30)
javax.servlet.GenericServlet.init(GenericServlet.java:212)
org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service
(CoyoteAdapter.java:293)

org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:
849)
org.apache.coyote.http11.Http11Protocol
$Http11ConnectionHandler.process(Http11Protocol.java:583)
org.apache.tomcat.util.net.JIoEndpoint
$Worker.run(JIoEndpoint.java:
454)
java.lang.Thread.run(Unknown Source)

-----
Please Help me!
Thanks a lot.