New Tomcat Error

12/08/2012 11:44:58 AM org.apache.catalina.core.AprLifecycleListener init
INFO: La biblioteca nativa de Apache Tomcat basada en ARP que permite un rendimiento óptimo en entornos de desarrollo no ha sido hallada en java.library.path: C:\Archivos de programa\Java\jre6\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Archivos de programa/Java/jre6/bin/client;C:/Archivos de programa/Java/jre6/bin;C:/Archivos de programa/Java/jre6/lib/i386;C:\Archivos de programa\NVIDIA Corporation\PhysX\Common;C:\Archivos de programa\MiKTeX 2.9\miktex\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Archivos de programa\Pinnacle\Shared Files\;C:\Archivos de programa\Microsoft SQL Server\90\Tools\binn\;C:\ARCHIV~1\PICC;C:\Archivos de programa\Rational\common;C:\Android\android-ndk-r7\;C:\Android\android-sdk\tools\;C:\Android\android-sdk\platform-tools\;C:\cygwin\bin;C:\Archivos de programa\QuickTime Alternative\QTSystem\;C:\Archivos de programa\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;C:\Sun\SDK\jdk\bin;C:\AppServ\MySQL\bin;C:\Android\android-ndk-r7\;C:\Android\android-sdk\tools\;C:\Android\android-sdk\platform-tools\;C:\cygwin\bin;;C:\Documents and Settings\Administrador\Escritorio\eclipse;
12/08/2012 11:44:58 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
ADVERTENCIA: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:TesterRest' did not find a matching property.
12/08/2012 11:44:58 AM org.apache.coyote.http11.Http11Protocol init
INFO: Inicializando Coyote HTTP/1.1 en puerto http-8080
12/08/2012 11:44:58 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 391 ms
12/08/2012 11:44:58 AM org.apache.catalina.core.StandardService start
INFO: Arrancando servicio Catalina
12/08/2012 11:44:58 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.35
12/08/2012 11:44:59 AM com.sun.jersey.api.core.PackagesResourceConfig init
INFO: Scanning for root resource and provider classes in the packages:
  com.mx.ipn.escom.testerRest.resources
12/08/2012 11:44:59 AM com.sun.jersey.api.core.PackagesResourceConfig init
INFO: Root resource classes found:
  class com.mx.ipn.escom.testerRest.resources.TemaResource
  class com.mx.ipn.escom.testerRest.resources.HelloResource
12/08/2012 11:44:59 AM com.sun.jersey.api.core.PackagesResourceConfig init
INFO: Provider classes found:
12/08/2012 11:44:59 AM org.apache.coyote.http11.Http11Protocol start
INFO: Arrancando Coyote HTTP/1.1 en puerto http-8080
12/08/2012 11:44:59 AM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
12/08/2012 11:44:59 AM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/15  config=null
12/08/2012 11:44:59 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 914 ms
12/08/2012 11:45:23 AM com.sun.jersey.spi.container.ContainerResponse write
GRAVE: A message body writer for Java type, class java.util.ArrayList, and MIME media type, application/json, was not found
12/08/2012 11:45:23 AM com.sun.jersey.server.impl.application.WebApplicationImpl onException
GRAVE: Internal server error
javax.ws.rs.WebApplicationException
	at com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:241)
	at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:689)
	at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:612)
	at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:603)
	at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:309)
	at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:425)
	at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:590)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)