Apparently the devs have been messing with the host for the metaserver without actually telling anyone, which is lovely of them. If you aren't able to reach the meta, the fix for this is to open your metaservers.cache file in the myfiles directory and replace the old URL with
http://orpgmeta.appspot.com/ - no need for the file.php, just that URL. Reboot and the meta will start working again.
Newer versions of Open may or may not have their cache file in a different directory. Open gets kinda wonky if it can't find the meta, so this might end up being a necessary step for it to work. If something mucks up you should have a backup of the file in your templates directory; if something seriously mucks up, the server URL is (as of this post) 203-59-91-132.dyn.iinet.net.au:6774 and can be entered manually.