Ah, that's progress.
Within the cert database, when you use iKeyman, does one of the certs have an asterisk '*' beside it?
That indicates that it is the "default".
If so, it should still be valid (when does it expire?).
Options:
- tell iKeyman to change the default certificate
- remove the default, thus leaving the new one as the only valid (unexpired) cert.
How does that sound?