[rules-users] guvnor startup error

Hi I am using 5.5 drools war .when the time of deploying ,each time it throwing below error .I request you to please let me know why I am getting this error ,and please tell me how to resolve this . INFO: Deploying configuration descriptor drools.xml Oct 17, 2013 10:55:57 AM org.apache.catalina.loader.WebappClassLoader validateJa rFile INFO: validateJarFile(C:\Documents and Settings\Administrator\Desktop\apache-tom cat-6.0.36\webapps\drools\WEB-INF\lib\jboss-servlet-api_3.0_spec-1.0.0.Final.jar ) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/ servlet/Servlet.class Oct 17, 2013 10:56:04 AM org.apache.catalina.session.StandardManager start SEVERE: Exception loading sessions from persistent storage java.lang.IllegalStateException: Singleton is not set at org.jboss.weld.bootstrap.api.helpers.IsolatedStaticSingletonProvider$ IsolatedStaticSingleton.get(IsolatedStaticSingletonProvider.java:52) at org.jboss.weld.Container.instance(Container.java:54) at org.jboss.weld.manager.BeanManagerImpl.readResolve(BeanManagerImpl.ja va:904) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:10 91) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1 786) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:19 -- View this message in context: http://drools.46999.n3.nabble.com/guvnor-startup-error-tp4026413.html Sent from the Drools: User forum mailing list archive at Nabble.com.