Well, I'm nothing if not persistent. I finally got all four items installed; Certificates, Verify Certificates, Report My Certificates and Block my Certificates.
Unfortunately, only the first three function. I can list (as an admin) all certificates issued as well as listing just my certificates (as a student,) but I can't find the link to Block my Certificates so that I can re-print them (either as an admin or student.)
Any additional help would be greatly appreciated.
Harvey