There is something wrong with your install of these items. As has been pointed out, the shorts should load with a texture, yours are grey, amd they should also be conformed to Genesis.
Do you get any error messges of any kind when loading the Magus Shorts? Have you looked in the Log File, Help > Troubleshooting > View Log File to see if there is any clue in there when the shorts are being loaded? What is the file extension of the Magus Shorts in the Content Library tab? is it Shorts.DUF, or something else?
I take it that you did install the Genesis Starter Essentials file, that is the installer that contains the content now, as it does not come with the main installer like it used to?
I think you should re-install the Genesis Starter Essentials, as it looks like something has got corrupted, or did not install properly. The installer should only re-install the files that it installed in the first place.