Since the new hcmc site was posted, there have been problems with the clipart library housed in a clipart library within the site.
There were about four directories of images missing on the hcmc site, so I unzipped a zip file of the old hcmc site on my hard drive and found the missing directories. Alas, there were no files inside the directories.
It turns out there were no files in a number of other directories in the clipart folder on my hard drive, even though those files and folders did exist on the hcmc account and I'm sure I used the files on my mac to upload to the new hcmc site in the first place.
I went to another account on the backup machine and found another copy of the clipart site and downloaded it to my mac. It turns out this one is missing the directories and contained image files for the clocks from 1:00 to 4:40, but appears to have everything else.
I've put a copy of that folder from the backup machine into the langcen account, and now have to find only those missing clock files.