MessageBrokerServlet failed to initialize due to runtime exception

Hello all,

I am new to the flex application, I am trying to build the SpringFactory to access the remote object.
during the server start up time I got the following stack trace can any one help me on this

**** MessageBrokerServlet failed to initialize due to runtime exception: [1]flex.messaging.MessageException: Cannot create class of type 'com.ncr.candistil.SpringFactory'. Type 'com.ncr.candistil.SpringFactory' not found.
at flex.messaging.util.ClassUtil.createClass(ClassUtil.java:65)
at flex.messaging.util.ClassUtil.createClass(ClassUtil.java:47)
at flex.messaging.config.FactorySettings.createFactory(FactorySettings.j ava:55)
at flex.messaging.config.MessagingConfiguration.createFactories(Messagin gConfiguration.java:114)
at flex.messaging.config.MessagingConfiguration.configureBroker(Messagin gConfiguration.java:93)
at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:12 5)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper. java:1139)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:96 6)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContex t.java:3956)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4 230)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase .java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:74 0)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.ja va:626)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.j ava:553)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488 )
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java :311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl eSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443 )
at org.apache.catalina.core.StandardService.start(StandardService.java:4 48)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700 )
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
[0]flex.messaging.config.ConfigurationException: An error occurred trying to construct FlexFactory 'com.ncr.candistil.SpringFactory'. The underlying cause is: 'flex.messaging.MessageException: Cannot create class of type 'com.ncr.candistil.SpringFactory'. Type 'com.ncr.candistil.SpringFactory' not found.'.
at flex.messaging.config.FactorySettings.createFactory(FactorySettings.j ava:72)
at flex.messaging.config.MessagingConfiguration.createFactories(Messagin gConfiguration.java:114)
at flex.messaging.config.MessagingConfiguration.configureBroker(Messagin gConfiguration.java:93)
at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:12 5)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper. java:1139)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:96 6)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContex t.java:3956)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4 230)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase .java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:74 0)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.ja va:626)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.j ava:553)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488 )
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java :311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl eSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443 )
at org.apache.catalina.core.StandardService.start(StandardService.java:4 48)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700 )
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)

Regards
Chinnarao