Hi, Thanks for digging into it.
I don't use iFrame. In my case, the problem disappears(or does not show), if I don't use jscookmenu. I wonder if it has something to do with the situation where the page is redirected back from the login page by the filter. And somehow it works on a different thread or the threadlocal has been reset? Thanks again for the trouble. Wei On Thursday 19 January 2006 17:08, Mario Ivankovits wrote: > Hi! > > Ok, In my case the FacesContext is null. > > html.HtmlRendererUtils - *NULL* context null > Servlet.service() for servlet opsj threw exception > java.lang.NullPointerException > at > org.apache.myfaces.renderkit.html.HtmlRendererUtils.selectContentType(HtmlR >endererUtils.java:1008) at > org.apache.myfaces.component.html.util.AddResource.writeWithFullHeader(AddR >esource.java:713) at > org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(Extensions >Filter.java:139) > > It will be hard work to determine why the facesContext is null. > One idea I have in mind is, that the given page has an iframe which will > also be a faces page. > > Now that exactly this page works multiple times and only fails rarely I > guess this has something to do with concurrency, though, the faces > context is in an thread local, so why should this have something to do > with conc? > > Odd, thing - If no one else has a new idea, I have to add more debug > statements. > > --- > Mario

