Getting an Expression Error: Named Object: org.richfaces.spa

[ir_fuel]

I have created an application in Eclipse (from scratch, manually added all dependencies) in which I can use spring, hibernate, jsf/richfaces.

Everything works except for the richfaces part. When using some very simple jsf it shows in the browser, however as soon as I add richfaces and i put for instance

<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>

....

<rich:spacer width="1" height="50" />
....

in my jsp file I get the following error:

javax.faces.FacesException: Expression Error: Named Object: org.richfaces.spacer not found.
com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:570)
javax.faces.webapp.UIComponentELTag.createComponent(UIComponentELTag.java:226)
javax.faces.webapp.UIComponentClassicTagBase.createChild(UIComponentClassicTagBase.java:486)
javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:670)
javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1142)
org.apache.jsp.index_jsp._jspx_meth_rich_005fspacer_005f0(index_jsp.java:187)
org.apache.jsp.index_jsp._jspx_meth_h_005fform_005f0(index_jsp.java:150)
org.apache.jsp.index_jsp._jspx_meth_f_005fview_005f0(index_jsp.java:106)
org.apache.jsp.index_jsp._jspService(index_jsp.java:69)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:410)
com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:468)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:140)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)


I have been searching for hours but I cannot fix it, it is driving me crazy :/
I have RichFaces 3.3.1 and I am running the application on Tomcat 6.0.

[ir_fuel]

This is my web.xml file

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
 xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 <welcome-file-list>
 <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>
 <context-param>
 <param-name>contextConfigLocation</param-name>
 <param-value>classpath:spring.cfg.xml</param-value>
 </context-param>
 <filter>
 <display-name>RichFaces Filter</display-name>
 <filter-name>richfaces</filter-name>
 <filter-class>org.ajax4jsf.Filter</filter-class>
 </filter>
 <filter-mapping>
 <filter-name>richfaces</filter-name>
 <servlet-name>Faces Servlet</servlet-name>
 <dispatcher>REQUEST</dispatcher>
 <dispatcher>FORWARD</dispatcher>
 <dispatcher>INCLUDE</dispatcher>
 </filter-mapping>
<servlet>
 <servlet-name>Faces Servlet</servlet-name>
 <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
 <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
 <servlet-name>Faces Servlet</servlet-name>
 <url-pattern>*.jsf</url-pattern>
</servlet-mapping>

 <listener>
 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>