"Cannot find setter method setDocBase" when deploying wars in 3.2 testsuite

The http-scoped.war, used by org.jboss.test.cluster.test.ScopedTestCase fails to start when deployed with the following errror:

2005-12-13 14:54:07,051 WARN [org.jboss.system.ServiceController] Problem starting service jboss.web.deployment:war=http-scoped.war,id=-278970256
org.jboss.deployment.DeploymentException: Error during deploy; - nested throwable: (ReflectionException: Cannot find setter method setDocBase null
Cause: java.lang.NoSuchMethodException: org.apache.commons.modeler.BaseModelMBean.setDocBase(java.lang.String))
at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:343)
at org.jboss.web.WebModule.startModule(WebModule.java:83)
at org.jboss.web.WebModule.startService(WebModule.java:61)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:283)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:233)
...
Caused by: ReflectionException: Cannot find setter method setDocBase null
Cause: java.lang.NoSuchMethodException: org.apache.commons.modeler.BaseModelMBean.setDocBase(java.lang.String)
at org.apache.commons.modeler.BaseModelMBean.setAttribute(BaseModelMBean.java:662)
at org.jboss.mx.server.RawDynamicInvoker.setAttribute(RawDynamicInvoker.java:69)
at org.jboss.mx.server.MBeanServerImpl.setAttribute(MBeanServerImpl.java:466)
at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeployInternal(TomcatDeployer.java:208)
at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeploy(TomcatDeployer.java:98)
at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:334)
... 78 more
Caused by: java.lang.NoSuchMethodException: org.apache.commons.modeler.BaseModelMBean.setDocBase(java.lang.String)
at java.lang.Class.getMethod(Class.java:986)
at org.apache.commons.modeler.BaseModelMBean.setAttribute(BaseModelMBean.java:646)
... 83 more