Struts2 Filter Start Error in Tomcat

Guys,

I have some problems with starting my webapp in Tomcat: Below is the stack trace:

1812 ERROR [/Quintilis31Web]  - Exception starting filter struts2
javax.xml.transform.TransformerFactoryConfigurationError: Provider org.apache.xalan.processor.TransformerFactoryImpl not found
        at javax.xml.transform.TransformerFactory.newInstance(Unknown Source)
        at com.opensymphony.xwork2.util.DomHelper$DOMBuilder.<clinit>(DomHelper.java:159)
        at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:107)
        at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:885)
        at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadDocuments(XmlConfigurationProvider.java:144)
        at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.init(XmlConfigurationProvider.java:111)
        at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:164)
        at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
        at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360)
        at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403)
        at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)
        at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:221)
        at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:302)
        at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:78)
        at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3666)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4258)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:831)
        at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:720)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:490)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1150)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.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:448)
        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(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
25.03.2010 17:25:08 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error filterStart
25.03.2010 17:25:08 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Context [/Quintilis31Web] startup failed due to previous errors
1890 INFO  TilesAccess  - Removing TilesContext for context: org.apache.catalina.core.ApplicationContextFacade
1890 INFO  [/Quintilis31Web]  - Closing Spring root WebApplicationContext

Just figured out that there was some problem with the JDK version. Looks fine now!