'Plugin [Tomcat] is required by plugins [[JBossESB]]' for JON SOA-P plugin

RHQ 3.0.0.GA [8fb6059] (Wed Jul 28 15:17:44 EDT 2010)
Failed to start the agent
java.lang.RuntimeException: Cannot initialize the plugin container
        at org.rhq.core.pc.plugin.PluginManager.initialize(PluginManager.java:173)
        at org.rhq.core.pc.PluginContainer.startContainerService(PluginContainer.java:372)
        at org.rhq.core.pc.PluginContainer.initialize(PluginContainer.java:245)
        at org.rhq.enterprise.agent.AgentMain.startPluginContainer(AgentMain.java:1748)
        at org.rhq.enterprise.agent.AgentMain.start(AgentMain.java:643)
        at org.rhq.enterprise.agent.AgentMain.main(AgentMain.java:413)
Caused
by: java.lang.IllegalArgumentException: Plugin [Tomcat] is required by
plugins [[JBossESB]] but it does not exist in the dependency graph yet
        at org.rhq.core.clientapi.agent.metadata.PluginDependencyGraph.getDeepDependencies(PluginDependencyGraph.java:329)
        at org.rhq.core.clientapi.agent.metadata.PluginDependencyGraph.getDeepDependencies(PluginDependencyGraph.java:342)
        at org.rhq.core.clientapi.agent.metadata.PluginDependencyGraph.getDeploymentOrder(PluginDependencyGraph.java:245)
        at org.rhq.core.pc.plugin.PluginManager.initialize(PluginManager.java:148)