Tomcat has an issue in interpreting the value (local) as a setting in its database configuration files that means it is then unable to resolve it to the actual database server. This problem has been covered in the previous Tip: "If the Interactive Dashboard refuses to work, this could an error in the JDBC configuration".
But it is better to prevent problems than to have to solve them. So when installing the beta version you will need to watch out that when entering the database details an actual servername is given.
Do not to let the install default to (local) or (...)