"Referenced file contains errors (jar:file:/.../plugins/org.jboss.tools.jst.web_3.5.0.Final-v20130717-0309-B75.jar!/catalog/web-facesconfig_2_2.xsd)."
faces-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<faces-config
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd"
version="2.2">
</faces-config>
It is obvious that http://xmlns.jcp.org/xml/ns/javaee is generated twice. To handle this error, one of them should be removed. Matching library versions with the XSD version is important, that's why removing first appearance is more proper action.
