morning folk, we are going through the migration process from jboss 4.3 to 5.1. i have now encountered the following error when trying to deploy an ear file : Deployment "vfszip:/usr/local/jboss-5.1.0.GA/server/default/deploy/10radNG.ear/" is in error due to the following reason(s): java.lang.ClassNotFoundException: com.sun.msv.datatype.xsd.CommandLineTester from BaseClassLoader i am using myeclipse to validate the application,.xml, jboss.xml, and ejb-jar.xml descriptor files, and they all pass that validation (apparently). i have checked that i have the latest xsdlib.jar and relaxngDatatypes.jar in the ear, and they are there, but i can't seem to get past this error. can someone provide an bit of additional direction as to what may be wrong? i didn't include the descriptor files, as they seem to be ok, but i can if necessary. while they are syntactically ok, it appears, i am wondering if there is some torqued up configuration i am specifying that caused the to want to load the CommandLineTester class. in looking at the sun msv project, that class isn't even in that package, its in the examples package for the xsdlib_200090415.jar file, so i am really confused on this. what doesn't make sense to me is that an ear that contains a war, sar, and jar file doesn't deploy, but i can take that same war and sar and deploy them individually. hopefully someone can help me in this... thanks in advance, tom View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4251489#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...