Can't get "server logs" to work (no replies)

The host is Centos 5.6, standard Centos MySQL. In /etc/my.cnf, we set error-log to /var/log/somename.log

All of the screens in MySQL Workbench 5.2.37 work for the server administration screens (connecting via ssh tunnel). All, except, server logs.

This screen says is cannot read /var/lib/mysql/ourhostname.err

Why would it not be looking in the correct place? How can we fix this?