Distribute Viewer option greyed out, even though the Viewer has been installed

Copy the Viewer Installation Package (the file you use to install the viewer) to the MindGenius application directory (\..Program Files\Gael\Ygnius). Close the MindGenius program and reopen. The Distribute Viewer option will now be available.

Installing the viewer on a PC with MindGenius installed is not required to be able to include the viewer in the distribution.