When setting the database properties make sure you set the user to i2b2metadata and the project to demo.
As of 1.7.12, it is possible to load the ACT ontology instead of the demo ontology. In this case, change the project to ACT. More information can be found in the release notes.
3. Save the changes and close the file.
To save yourself steps, DO NOT close your Command Prompt window as you will be continuing to use it throughout the remainder of the installation.