Hi, The last message I sent wasn´t very precise. I´m talking about: java.lang.StackOverflowError in ApplicationHttpRequest.setAttribute Tomcat 4.0.nightly build (20010503) The error doesn´t happen in ApplicationHttpRequest.setAttribute, this is a lateral effect. The real error happens when there is an error in a JSP page and the method pageContext.handlePageException(t) is called (in the compiled JSP). The error is provoked by the JSP error page because it calls itself. Thanks a lot. _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com