Can't login to StartSSL / StartCom control panel due to "ssl_error_unknown_ca_alert" error

bugzilla.mozilla.org/show_bug.cgi?id=1037080
My StartCom certificate is due to expire shortly. However, when I try to login to their control panel to generate an updated one, I'm getting the following error: An error occurred during a connection to auth.startssl.com. Peer does not recognize and t ...

forum.startcom.org/viewtopic.php?f=15&t=2522
Does anyone have problem using Firefox to access https://auth.startssl.com with their unexpired personal certificate? I get the following error page:
Secure Connection Failed
...Visited101

forum.startcom.org/viewtopic.php?p=8000
StartSSL does not trust itself? Or am i doing something unsupported by StartSSL OpenIDs?
An error occurred during a connection to auth.startssl.com. Peer doesnot recognize and trust the CA that issued your certificate. (Error code: ssl ...Visited99