Before starting anything, it is always a good idea to update your Maltego client to the latest version. 

This can be done by:

  1. Clicking the Application Button (circle in top left corner)
  2. Hovering over Tools 
  3. Clicking Check for Updates

These steps are shown in the image below:

The Maltego update wizard will open and check for updates. If your Maltego client is already update-to-date, then you can click Finish. If there are new updates to be installed, you will be prompted to install the updates with the window below:

You can click Next to allow the Maltego client to download the latest updates. Once the updates are finished downloading you will need to restart the client for the updates to be installed.

After restarting the client you can confirm that you have the latest version installed by checking the version number shown at the top of the client.