Getting MWS errors in IS startup

Hi,
We just migrated from webMethods product 7.1.2 to 8.0.1. Every thing looks to be cool except the below error at IS startup, Could any body through some light on it

Here is the error

2011-05-17 14:08:02 EDT [CommonLib.MWS.0002I] Initializing components of: CoreServices
2011-05-17 14:08:02 EDT [CommonLib.MWS.0002I] Initializing component: com.webMethods.portal.service.dir.impl.DirSystem
2011-05-17 14:08:02 EDT [CommonLib.MWS.0002I] Initializing components of: directory
2011-05-17 14:08:02 EDT [CommonLib.MWS.0002I] Initializing component: com.webMethods.portal.service.portlet.impl.PortletProvider
2011-05-17 14:08:02 EDT [CommonLib.MWS.0002I] Initializing components of: portlet
2011-05-17 14:08:03 EDT [CommonLib.MWS.0002I] No registered exception delegate
[POP.001.0002] A “java.lang.Exception” occurred with the Message "java.lang.NoClassDefFoundError: com.webMethods.caf.portlet.IPortletURL"java.lang.Exception: java.lang.NoClassDefFoundError: com.webMethods.caf.portlet.IPortletURL
at com.webMethods.portal.service.portlet.impl.PortletType$PortletBeanPoolManager.initialize(PortletType.java:458)
at com.webMethods.portal.service.portlet.impl.PortletType.init(PortletType.java:87)
at com.webMethods.portal.service.portlet.impl.PortletProvider.initComponent(PortletProvider.java:811)
at com.webMethods.portal.service.portlet.impl.PortletProvider.initComponents(PortletProvider.java:722)
at com.webMethods.portal.system.impl.BaseProvider.init(BaseProvider.java:169)
at com.webMethods.portal.service.portlet.impl.PortletProvider.init(PortletProvider.java:341)
at com.webMethods.portal.system.init.impl.DefaultPhase.initComponent(DefaultPhase.java:107)
at com.webMethods.portal.system.impl.BaseProvider.initComponents(BaseProvider.java:601)
at com.webMethods.portal.system.impl.BaseProvider.init(BaseProvider.java:169)
at com.webMethods.portal.system.init.impl.DefaultPhase.init(DefaultPhase.java:49)
at com.webMethods.portal.system.init.impl.DefaultPhaseProvider.initComponent(DefaultPhaseProvider.java:259)
at com.webMethods.portal.system.impl.BaseProvider.initComponents(BaseProvider.java:601)
at com.webMethods.portal.system.impl.BaseProvider.init(BaseProvider.java:169)
at com.webMethods.portal.system.init.impl.DefaultPhaseProvider.initializePhases(DefaultPhaseProvider.java:89)
at com.webMethods.portal.system.PortalSystem.init(PortalSystem.java:865)
at com.webMethods.portal.system.PortalSystem.main(PortalSystem.java:823)
at com.webMethods.sc.mws.MWSLibrary.init(MWSLibrary.java:244)
at com.wm.app.b2b.server.cds.CDSUserManager.initialize(CDSUserManager.java:167)
at com.wm.app.b2b.server.UserManager.jndiInit(UserManager.java:518)
at com.wm.app.b2b.server.UserManager.init(UserManager.java:470)
at com.wm.app.b2b.server.Server.run(Server.java:348)
Caused by:
java.lang.NoClassDefFoundError: com.webMethods.caf.portlet.IPortletURL
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:275)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:69)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:540)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:451)
at java.net.URLClassLoader.access$300(URLClassLoader.java:79)
at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1034)
at java.security.AccessController.doPrivileged(AccessController.java:284)
at java.net.URLClassLoader.findClass(URLClassLoader.java:429)
at java.lang.ClassLoader.loadClass(ClassLoader.java:653)
at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:275)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:69)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:540)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:451)
at java.net.URLClassLoader.access$300(URLClassLoader.java:79)
at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1034)
at java.security.AccessController.doPrivileged(AccessController.java:284)
at java.net.URLClassLoader.findClass(URLClassLoader.java:429)
at java.lang.ClassLoader.loadClass(ClassLoader.java:653)
at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:275)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:69)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:540)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:451)
at java.net.URLClassLoader.access$300(URLClassLoader.java:79)
at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1034)
at java.security.AccessController.doPrivileged(AccessController.java:284)
at java.net.URLClassLoader.findClass(URLClassLoader.java:429)
at java.lang.ClassLoader.loadClass(ClassLoader.java:653)
at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:275)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:69)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:540)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:451)
at java.net.URLClassLoader.access$300(URLClassLoader.java:79)
at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1034)
at java.security.AccessController.doPrivileged(AccessController.java:284)
at java.net.URLClassLoader.findClass(URLClassLoader.java:429)
at java.lang.ClassLoader.loadClass(ClassLoader.java:653)
at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
at java.lang.J9VMInternals.verifyImpl(Native Method)
at java.lang.J9VMInternals.verify(J9VMInternals.java:72)
at java.lang.J9VMInternals.verify(J9VMInternals.java:70)
at java.lang.J9VMInternals.verify(J9VMInternals.java:70)
at java.lang.J9VMInternals.verify(J9VMInternals.java:70)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:134)
at java.lang.Class.forNameImpl(Native Method)
at java.lang.Class.forName(Class.java:139)
at com.webMethods.rtl.util.ObjectUtil.getClass(ObjectUtil.java:198)
at com.webMethods.portal.system.pool.impl.DefaultPooledObjectManager.initialize(DefaultPooledObjectManager.java:37)
at com.webMethods.portal.service.portlet.impl.PortletType$PortletBeanPoolManager.initialize(PortletType.java:449)
… 20 more
Caused by:
java.lang.ClassNotFoundException: com.webMethods.caf.portlet.IPortletURL
at java.lang.ClassNotFoundException.(ClassNotFoundException.java:76)
at java.net.URLClassLoader.findClass(URLClassLoader.java:396)
at java.lang.ClassLoader.loadClass(ClassLoader.java:653)
at java.lang.ClassLoader.loadClass(ClassLoader.java:619)
… 75 more

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