Deploying WebLogic Portal (WLP) Ear Failed After Upgrading from 10.3 to 10.3.1 (Doc ID 960347.1)

####<2009-10-22 CST> <Error> <Deployer> <machine>
<AdminServer> <[STANDBY] ExecuteThread: '3' for queue: 'weblogic.kernel.Default
(self-tuning)'> <> <> <> <1256200391328>
<BEA-149265> <Failure occurred in the execution of deployment request with ID
'<ID>' for task '2'. Error is: 'weblogic.application.ModuleException: Exception preparing module: EJBModule(content.jar)

Unable to deploy EJB:
<WLP_HOME> \user_projects\domains\p3_domain\servers\AdminServer\tmp\_WL_user\content-management-app-lib\xxxxx\content.jar from content.jar

[EJB:010229]EJB : VirtualOps .Unable to initialize method info for remote ,home , message listener
 or webservice endpoint interface. The error is java.lang.NoClassDefFoundError:
 com/bea/p13n/jobmanager/job/CalendarJob
 at java.lang.ClassLoader.defineClass1(Native Method)
 at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
 at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
 at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
 at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
 at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
 at java.lang.Class.getDeclaredMethods0(Native Method)
 at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
 at java.lang.Class.privateGetPublicMethods(Class.java:2547)
 at java.lang.Class.privateGetPublicMethods(Class.java:2557)
 at java.lang.Class.getMethods(Class.java:1410)
 at weblogic.ejb.container.deployer.ClientDrivenBeanInfoImpl.initializeMethodInfos(ClientDrivenBeanInfoImpl.java:459)
 at weblogic.ejb.container.deployer.ClientDrivenBeanInfoImpl.init(ClientDrivenBeanInfoImpl.java:259)
 at weblogic.ejb.container.deployer.BeanInfoImpl.createBeanInfoImpl(BeanInfoImpl.java:731)
 at weblogic.ejb.container.deployer.MBeanDeploymentInfoImpl.initializeBeanInfos(MBeanDeploymentInfoImpl.java:573)
 at weblogic.ejb.container.deployer.MBeanDeploymentInfoImpl.<init>(MBeanDeploymentInfoImpl.java:254)
 at weblogic.ejb.container.deployer.EJBDeployer.prepare(EJBDeployer.java:1103)
 at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:425)