In "Investigating Astronomy" by Timothy Slater. Chapter 5 in the observing projects, #2 page 139. The question asks to select favourites>Investigating Astronomy>Earth then right click on the Earth and select Surface Image/Model>Geological200MyAgo. But Geological200MyAgo option is not available.
The textbook also says to select surface image/model>geological65MyAgo and surface Image/Model>Geological Present and Geological Future
The missing folders are attached. Download the zip file, unzip (right click --> extract all) and place all four folders in the following locations.
On Windows: C:\Program Files(x86)\Starry Night College\Sky Data\Planet Images\Earth\
On Mac: RIght click the Starry Night College program and choose "Show Package Contents" then navigate Contents\Resources\SkyData\PlanetImages\Earth