When trying to login to the Workstation, the following error was shown:
java.lang.RuntimeException: java.lang.NoSuchMethodError: javax.persistence.EntityManager.createQuery(Ljava/lang/String;Ljava/lang/Class;)Ljavax/persistence/TypedQuery;
1) Incorrectly placing files in lib that should really be in hotDeploy. Even so, if hotDeploy and lib contain definitions for the same classes, there could be issues.
2) Mismatch between Workstation and Registry version.
Reinstalled DevTest as some files were corrupted