In order to install the Denodo Platform express in the Linux Operating system, I would follow the steps mentioned in the [Using the Command Line Installer](https://community.denodo.com/docs/html/browse/latest/platform/installation/using_the_command_line_installer/using_the_command_line_installer) section of the Denodo Platform Installation Guide. Even after performing all steps as mentioned in the above document, if I get the "Invalid license version", I would make sure that Denodo License file are renamed correctly(i.e., **denodo. lic**) and place it in the **<DENODO_HOME>\conf** directory.
In order to get more information about the root cause, I would change the "com.denodo" log level to Debug in the log4j2.xml located at <DENODO_HOME>\conf\launcher and check the** denodo-launcher.log** file located in the <DENODO_HOME>\logs\launcher.
Hope this helps!