I set up Tomcat successfully but when I added the following to my server.xml file I get NoClassDefFoundError from tomcat:

   <Host name="www.mydomain1.com" debug="0"
     appBase="webapps"
     unpackWARs="true" autoDeploy="true">

 <Context path="" docBase="mydomain1" debug="1"/>

   <Valve className="org.apache.catalina.valves.AccessLogValve"
          directory="logs" prefix="mydomain1_access_log." suffix=".txt"
          pattern="common" resolveHosts="false"/>
 </Host>


from the catalina_log file (note I do have commons-digester.jar in the server/lib directory):

2004-01-05 16:19:52 StandardContext[/balancer]Exception starting filter BalancerFilter
java.lang.NoClassDefFoundError: org/apache/commons/digester/Digester
 at org.apache.webapp.balancer.RulesParser.createDigester (RulesParser.java:107)
 at org.apache.webapp.balancer.RulesParser.<init>(RulesParser.java:85)
 at org.apache.webapp.balancer.BalancerFilter.init (BalancerFilter.java:121)
 at org.apache.catalina.core.ApplicationFilterConfig.getFilter (ApplicationFilterConfig.java:272)
 at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef (ApplicationFilterConfig.java:355)
 at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:126)
 at org.apache.catalina.core.StandardContext.filterStart (StandardContext.java:3646)
 at org.apache.catalina.core.StandardContext.start (StandardContext.java:4263)
 at org.apache.catalina.core.ContainerBase.addChildInternal (ContainerBase.java:866)
 at org.apache.catalina.core.ContainerBase.addChild (ContainerBase.java:850)
 at org.apache.catalina.core.StandardHost.addChild (StandardHost.java:633)
 at org.apache.catalina.core.StandardHostDeployer.install (StandardHostDeployer.java:316)
 at org.apache.catalina.core.StandardHost.install (StandardHost.java:859)
 at org.apache.catalina.startup.HostConfig.deployDirectories (HostConfig.java:723)
 at org.apache.catalina.startup.HostConfig.deployApps (HostConfig.java:473)
 at org.apache.catalina.startup.HostConfig.start (HostConfig.java:1002)
 at org.apache.catalina.startup.HostConfig.lifecycleEvent (HostConfig.java:393)
 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent (LifecycleSupport.java:166)
 at org.apache.catalina.core.ContainerBase.start (ContainerBase.java:1133)
 at org.apache.catalina.core.StandardHost.start (StandardHost.java:816)
 at org.apache.catalina.core.ContainerBase.start (ContainerBase.java:1125)
 at org.apache.catalina.core.StandardEngine.start (StandardEngine.java:518)
 at org.apache.catalina.core.StandardService.start (StandardService.java:519)
 at org.apache.catalina.core.StandardServer.start (StandardServer.java:2343)
 at org.apache.catalina.startup.Catalina.start (Catalina.java:581)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke (Method.java:324)
 at org.apache.catalina.startup.Bootstrap.start (Bootstrap.java:297)
 at org.apache.catalina.startup.Bootstrap.main (Bootstrap.java:398)