I believe the -0001 certificates were created by an earlier beta version of letsencrypt.
Delete both the example.com and the example.com-0001 files (from various places in /etc/letsencrypt) and then re-install the certificate.
I believe the -0001 certificates were created by an earlier beta version of letsencrypt.
Delete both the example.com and the example.com-0001 files (from various places in /etc/letsencrypt) and then re-install the certificate.