Can someone explain to me why I get the following message
during startup when I try to deploy my EJB jar file.

2002-09-25 11:34:14,949 DEBUG [org.jboss.management.j2ee.J2EEManagedObject] preDeregister(), parent: jboss.management.single:J2EEServer=Single,name=
2002-09-25 11:34:14,959 ERROR [org.jboss.ejb.EjbModule] Initialization failed
org.jboss.deployment.DeploymentException: Error while fixing table name; - nested throwable: (org.jboss.util.NestedSQLException: Failed to register driver for: org.gjt.mm.mysql.Driver; - nested throwable: (java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver); - nested throwable: (org.jboss.resource.ResourceException: Failed to register driver for: org.gjt.mm.mysql.Driver; - nested throwable: (java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver)))
at org.jboss.ejb.plugins.cmp.jdbc.SQLUtil.fixTableName(SQLUtil.java:67)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCEntityBridge.(JDBCEntityBridge.java:103)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.create(JDBCStoreManager.java:332)

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The thing is that I can hot deploy and successfully run this same jar module, the first time after a build.
But,as soon as I start-up Jboss, I get this message.

-- Thanks,