The thread mentioned above involves deploying in Jboss. Jboss 5.x apparently validates all xmls in /WEB-INF folder. The solution involves moving the xmls that get the errors, into a sub-folder in /WEB-INF. For example, move the xmls that is getting the error into /WEB-INF/myXmls. Of course, adjust the configurations, etc. that need to point to the new xml locations.