I have a certificate I'm working on, and I was trying to create a custom layout for it. I edited the ceritifcate.php file in the lang/en/ folder, added some additioanl strings, tinkered with the string attributes in the the certificate.php file in the type/mytype/ folder. Since it didn't look like my new strings were taking, I purged my cache. I had done this for other items and it was not a problem.
This time it was. The entire site went down for about 5 minutes, and when it came back up, I went straight back to my cert. I could view it (my changes still didn't take), but now, I cannot edit it, either by selecting the "edit" icon in the course view, or by selecting the Certificate administration>Edit settings link in my Settings block. I checked various other activities and found I could edit them as usual, but not the Certificate activity. I took a look through tables in the database that looked like they were associated with the Certificate activity to see if anything obvious jumped out at me, but couldn't.
My old cert I had generated was still there, and I can look at it, but I can't edit it. I can't even add a new one. Is this something that only is affecting the Certificate module, and that I can fix by reinstalling it, or is this a sign of a more serious problem?