anonymous wrote : 07:28:15,812 ERROR [MainDeployer] Could not create deployment: file:/C:/JBoss/jbpm-jpdl-3.2.1/server | /server/jbpm/deploy/mysql-ds.xml | org.jboss.deployment.DeploymentException: Trying to install an already registered mbean: jboss.jca:s | ervice=LocalTxCM,name=DefaultDS | Check how many datasource configuration files (*-ds.xml) you have in the /deploy directory. I would suspect you find two, the default hsqldb-ds.xml and the mysql-ds.xml you've created. Just make sure that these are registered under a unique jndi name: hsqldb-ds.xml --> jndi-name: DefaultDS mysql-ds.xml --> jndi-name: JbpmDS View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4079939#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...