S/MIME: Upload of certificate failed

Question

I am trying to upload a new external CA certificate under Email encrpytion - S/MIME CAs. The pure file upload itself seems to work ("Starting upload, please wait" rushes to 100%), but when I push the seconf "Upload button", I get an error message "Information: Import of certificate failed" and the CA does not appear in the list. What's wrong? (This has worked before, i.e. I do have some local CAs added in the past)

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hagman_01 · Answer

I suppose I should come back to this thread. 
 For today I encountered the same problem, googled it - and landed here! 
 What I did now was to remove the previously uploaded CA-certs one by one, and that had the following effect: 
 When deleting the first, I was presented a popup that repeated the error message quoted above from the confd.log, which I could accept with "OK" and the entry was deleted as rrequested. When deleting the other entries, there were also such popups, but with a harmless message ("... really delete?"). 
 Once I had the list empty, I started adding back what I still had available (and the new ones I wanted to add) and had no problems. 
 Now I hope that another old problem of mine (third party user certs were not extracted from incoming mail) has been repaired by the same action. That ought to become visible in a day or two.