I downloaded the source code for the full final installation of JBPM version 6.0.0. I was able to build the source with the ant build tool from within the jbpm_install directory using the command "ant install.demo". Jboss starts up fine and I am able to bring up the KIE Workbench signon page via the http://localhost:8080/jbpm-console URL. I cannot log in though. I'm familar with the add-user.sh script and tried adding a new user this way with the kie-server role, but no luck. I also fooled with the Jboss related user/role config files within the jbpm_install/jboss... directory, then rebuilt and redeployed, but still no luck. Right now I'm just using the default h2 database. Any help or direction is appreciated.
You do not have the right role. kie-server is a role for a user who connects to KIE Server through remote APIs. In order to log into the jBPM Console (or KIE Workbench), you need to have a user with one of these roles: admin, developer, analyst, manager or user. Look at section 9.4. Configuration of the jBPM documentation.
And if I may suggest, try to use the latest version 6.4.0.Final. The version you are using is really old and full of bugs.