I upgraded moodle from 1.8.6 to 1.9.4. This is not my first upgrade by any means and I followed the directions to a TEE. After I did the upgrade and copied the certificate folder from my back up in to the mod folder, the only thing that comes up when I click on Certificate under the Modules link is certificate auto preview setting change. I am unable to view or create certs. I upgraded my certificate module and still I get this same issue. if I type the path www.mysite.com/moodle/mod/certificate, I get an error saying A Required Parameter (id) is missing. I cannot figure out what is causing this.
I have also received the same errors but mine was adding the certificate module to a fresh install of 1.9.4. Has there been any solution discovered to resolve this issue?
I don't know about the 1.94 issue on a fresh install but I do know that the 1.8 certificate module is not going to run in 1.94. If you have any custom certificate work done in 1.8 you'll have to redo it into the 1.9 version of certificate.