Satellite webui encounters a 404 with the message "The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later."

Issue

The tomcat service fails at startup with the following error in /var/log/tomcat5/catalina.out:

Aug 17, 2012 12:39:40 PM org.apache.tomcat.util.digester.Digester startElement
SEVERE: Begin event threw error
Throwable occurred: java.lang.NoClassDefFoundError: org.apache.commons.modeler.Registry
at org.apache.catalina.mbeans.MBeanUtils.createRegistry(MBeanUtils.java:1323)
at org.apache.catalina.mbeans.MBeanUtils.(MBeanUtils.java:99)
at java.lang.J9VMInternals.initializeImpl(Native Method)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)

Caused by: java.lang.ClassNotFoundException: org.apache.commons.modeler.Registry
at java.net.URLClassLoader.findClass(URLClassLoader.java:434)
at java.lang.ClassLoader.loadClass(ClassLoader.java:653)
at java.lang.ClassLoader.loadClass(ClassLoader.java:619)