action servlet does not comes up

hitc

We currently have a problem on one of our server using TS672 on solaris.When we try to create a page or edit a site. The only error in the log after that is
2010-08-13 10:48:22,434 WARN org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/iw-cc].[action] - Servlet action is currently unavailable

After a iwreset -ui this error appear in the log

2010-08-13 10:44:20,085 INFO com.interwoven.livesite.common.servlet.Startup - com.interwoven.livesite.common.servlet.Startup Init Complete
2010-08-13 10:44:23,613 ERROR org.apache.struts.action.ActionServlet - Unable to initialize Struts ActionServlet due to an unexpected exception or error thrown, so marking the servlet as unavailable. Most likely, this is due to an incorrect or missing library dependency.
java.lang.IllegalArgumentException: Serialization parameter {indent} must have the value yes or no
at net.sf.saxon.Controller.setOutputProperty(Controller.java:351)
at com.interwoven.livesite.common.xml.StylesheetWrapper.setOutputProperties(StylesheetWrapper.java:612)
at com.interwoven.livesite.common.xml.StylesheetWrapper.transformToString(StylesheetWrapper.java:457)
at com.interwoven.livesite.common.struts.XMLMessageResources.buildMessages(XMLMessageResources.java:251)
at com.interwoven.livesite.common.struts.XMLMessageResources.loadLocale(XMLMessageResources.java:204)
at com.interwoven.livesite.common.struts.XMLMessageResources.(XMLMessageResources.java:137)
at com.interwoven.livesite.common.struts.XMLMessageResourcesFactory.createResources(XMLMessageResourcesFactory.java:46)
at org.apache.struts.action.ActionServlet.initModuleMessageResources(ActionServlet.java:920)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:334)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3956)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4230)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
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:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
2010-08-13 10:44:23,617 ERROR org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/iw-cc] - Servlet /iw-cc threw load() exception
javax.servlet.UnavailableException: Serialization parameter {indent} must have the value yes or no
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:368)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1139)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3956)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4230)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
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:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Aug 13, 2010 10:44:24 AM org.apache.coyote.http11.Http11BaseProtocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Aug 13, 2010 10:44:24 AM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Aug 13, 2010 10:44:24 AM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/111 config=null
Aug 13, 2010 10:44:24 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 92779 ms

Everything comes up and no others errors.
The configs files were not touched,all the jars are there...
if someone has an idea

Thx

AlexC

Did you update your java and forget the endorsed directory? (just a guess).