Squid fails to start

[gary201]

For a couple versions now in the 2.7.x releases, the web proxy (squid) doesn't work anymore.  It was working then after an upgrade fails.  The error showing up in the system log (system > log files > general), is "FATAL: No valid signing certificate configured for HTTP_port <ip address>".  I don't have any custom certs installed.  Squid was working a couple releases ago.