]> &database; You must download several jar files before you can build Middlegen. Creating tables using URL ${database.url} The JDBC driver you have specified by including one of the files in ${middlegen.dir} doesn't exist. You have to download this driver separately and put it in ${database.driver.file} Please make sure you're using a version that is equal or superior to the one we looked for. If you name the driver jar file differently, please update the database.driver.file property in the ${middlegen.dir}/xxx.xml file accordingly.