new JSF Project on tomcat 6.0.20 generates doubled el-api.jar and causes LinkageError ------------------------------------------------------------------------------------- Key: JBIDE-4647 URL: https://jira.jboss.org/jira/browse/JBIDE-4647 Project: Tools (JBoss Tools) Issue Type: Bug Components: JSF Affects Versions: 3.1.0.M2 Environment: eclipse galileo 20090621-0832, Vista Reporter: Tomasz Bartczak Created a new JSF Project with FaceletsKickStartRI and chosen a fresh tomcat 6.0.20. java.lang.LinkageError: loader constraint violation: when resolving interface method "javax.servlet.jsp.JspApplicationContext.addELResolver(Ljavax/el/ELResolver;)V" the class loader (instance of org/apache/catalina/loader/WebappClassLoader) of the current class, com/sun/faces/config/ConfigureListener, and the class loader (instance of org/apache/catalina/loader/StandardClassLoader) for resolved class, javax/servlet/jsp/JspApplicationContext, have different Class objects for the type javax/el/ELResolver used in the signature when starting server and this app. and i cannot see an option of removing el-api.jar from web app libraries. instead i had to remove jar from tomcat when I did that I had class not found ! java.lang.NoClassDefFoundError: javax/el/ExpressionFactory I think because of tomcat needs it on its internal classpath... so there is no solution! -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira