I started the problem on the installation and deployment forum but I was asked to move to this forum.

I try to upgrade our JBoss 4.0.3SP1 to JBoss 4.0.4GA. In our application we make use of JAXB. In JBoss 4.0.3SP1 I added the JAXB JWSDP 1.6 libraries to the default/deploy/lib directory and everything worked fine.

However, if I follow the same procedure for JBoss 4.0.4GA (putting the JAXB JWSDP 1.6 libraries in default/lib) I got the following exception when deploying the EAR file.

java.lang.NoClassDefFoundError: javax/xml/bind/JAXBException.