Need help on the error

Hi
I am migrating from struts 1.1 to 1.2.4 and when i start my server i see the following error message. Any idea why ...thanks

ERROR 21Apr2005 21:20 [Thread-1] (TilesPlugin.java:230) - Can't create Tiles definition factory for module ''.
ERROR 21Apr2005 21:20 [Thread-1] (ApplicationContext.java:662) - Servlet /tibcoqa threw load() exception
javax.servlet.ServletException: IO Error while parsing file '/WEB-INF/tiles-defs.xml'. jakarta.apache.org
at org.apache.struts.tiles.TilesPlugin.initDefinitionsFactory(TilesPlugin.java:235)
at org.apache.struts.tiles.TilesPlugin.init(TilesPlugin.java:139)
at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:839)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:332)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1068)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:900)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3823)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4087)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:800)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:695)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:472)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1106)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1019)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1011)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:440)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:683)
at org.apache.catalina.startup.Catalina.start(Catalina.java:537)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:271)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409)

I found the problem..the properties filename did not match with the resource in the struts-config.xml file.

Thanks

-Satish