I discovered a browser will refresh properly on the OpenLP box itself, which suggests a firewall problem. I have both http and https allowed, along with port 4316 open. When I turn off the firewall altogether, pages will load on other machines but quite erratically. They might reload right away or they might reload 20 or 30 seconds later. This is not really an improvement as the remote interface is still unusable. When I restart the firewall pages once again will not autorefresh.
