Krystal is correct that the images for the bodies are either missing or corrupted. If you wish to verify the condition of the images, they can usually be found in Program Files\Virtual Families\Images (for Windows) or in the application bundle on a Mac (right-click, Show Package Contents, Contents, Resources, Images). Keep in mind that some game portals package the game in such a way that the Images folder is inaccessible.
I would add to knksmiles' suggestion that to successfully reinstall the game, you must download the trial from the same site where you purchased it. Activation codes from the various games sites are not compatible with downloads from another site, and installing the 'wrong' version of the game will cause it to revert to a demo.
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Barbara
Unicorn
Last Day of Work