A few thoughts...
1. Please post any error messages you see in the server.log when you try to deploy.
2. The module type <jar> in your example application.xml is not even a supported module type.
3. If you actually used <java> in your application.xml to try to identify the library JAR, you've actually told GlassFish to treat that JAR as an application client JAR. Probably not what you wanted and GlassFish might have complained about that...especially if your library JAR does not specify Main-Class in its manifest...a requirement for app clients.
- Tim
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