Admin console mime type problem

I recently moved my Openfire server to a Linux box. Everything works, AD authentication, groups,etc. But the admin console has started doing something funny. After the initial install, I used the unsecured admin console to configure the server. Just today, both the http and https Admin consoles have been acting funny. When pointing my browser at the console I get the following dialog:

I’'ve restarted the Openfire service a number of times to no avail.

TIA.

Sorry, about that.

The link to the admin page was incorrectly labeled http://10.130.80.80:9091 instead of https://10.130.80.80:9091. The ‘‘s’’ makes all the difference in the world.