Clicking Issue Settings -> Statuses -> jira (workflows) results in stack trace

2005-04-06 16:44:30,489 ERROR [webwork.dispatcher.ServletDispatcher] Could not execute action
java.lang.IllegalArgumentException: Action 'admin.workflow.ViewWorkflowSteps' not found or could not be initialized: java.lang.ClassNotFoundException: No ClassLoaders found for: admin.workflow.ViewWorkflowSteps
at webwork.action.factory.JavaActionFactory.getActionImpl(JavaActionFactory.java:64)
at webwork.action.factory.ScriptActionFactoryProxy.getActionImpl(ScriptActionFactoryProxy.java:54)
at webwork.action.factory.XMLActionFactoryProxy.getActionImpl(XMLActionFactoryProxy.java:54)
at webwork.action.factory.PrefixActionFactoryProxy.getActionImpl(PrefixActionFactoryProxy.java:102)
at webwork.action.factory.JspActionFactoryProxy.getActionImpl(JspActionFactoryProxy.java:53)
at webwork.action.factory.CommandActionFactoryProxy.getActionImpl(CommandActionFactoryProxy.java:62)
at webwork.action.factory.AliasingActionFactoryProxy.getActionImpl(AliasingActionFactoryProxy.java:96)
at webwork.action.factory.CommandActionFactoryProxy.getActionImpl(CommandActionFactoryProxy.java:62)
at webwork.action.factory.ContextActionFactoryProxy.getActionImpl(ContextActionFactoryProxy.java:36)
at webwork.action.factory.PrepareActionFactoryProxy.getActionImpl(PrepareActionFactoryProxy.java:37)
at webwork.action.factory.ParametersActionFactoryProxy.getActionImpl(ParametersActionFactoryProxy.java:46)
at webwork.action.factory.ChainingActionFactoryProxy.getActionImpl(ChainingActionFactoryProxy.java:52)
at webwork.action.factory.DefaultActionFactory.getActionImpl(DefaultActionFactory.java:125)
at webwork.action.factory.ActionFactory.getAction(ActionFactory.java:63)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:119)
at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:186)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)