Search tool does not startup due to dependency

On startup of Sakai the search tool blows up with the following stack trace.
DH suggests common langs needs to be updated.

2010-08-05 10:16:38,856 ERROR main org.apache.catalina.core.ContainerBase.[Catalina].[localhost]./sakai-search-tool - Servlet /sakai-search-tool threw load() exception
java.lang.ClassNotFoundException: org.apache.commons.lang.text.StrBuilder
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1436)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1282)
at org.apache.velocity.runtime.parser.node.SimpleNode.literal(SimpleNode.java:277)
at org.apache.velocity.runtime.parser.node.ASTReference.literal(ASTReference.java:902)
at org.apache.velocity.runtime.parser.node.ASTReference.getRoot(ASTReference.java:770)
at org.apache.velocity.runtime.parser.node.ASTReference.init(ASTReference.java:134)
at org.apache.velocity.runtime.parser.node.SimpleNode.init(SimpleNode.java:303)
at org.apache.velocity.runtime.parser.node.SimpleNode.init(SimpleNode.java:303)
at org.apache.velocity.runtime.parser.node.ASTDirective.init(ASTDirective.java:94)
at org.apache.velocity.runtime.parser.node.SimpleNode.init(SimpleNode.java:303)
at org.apache.velocity.Template.initDocument(Template.java:204)
at org.apache.velocity.Template.process(Template.java:125)
at org.apache.velocity.runtime.resource.ResourceManagerImpl.loadResource(ResourceManagerImpl.java:446)
at org.apache.velocity.runtime.resource.ResourceManagerImpl.getResource(ResourceManagerImpl.java:354)
at org.apache.velocity.runtime.RuntimeInstance.getTemplate(RuntimeInstance.java:1400)
at org.apache.velocity.runtime.RuntimeInstance.getTemplate(RuntimeInstance.java:1380)
at org.apache.velocity.app.VelocityEngine.getTemplate(VelocityEngine.java:401)
at org.sakaiproject.search.tool.ControllerServlet2.init(ControllerServlet2.java:136)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3996)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4266)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:884)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:737)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1203)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
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:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)