Upon further investication, my error log has shown me this line
2014.05.12 12:03:25 org.jivesoftware.util.CertificateManager - Error decoding subjectAltName
java.lang.ClassCastException: org.bouncycastle.asn1.DERTaggedObject cannot be cast to org.bouncycastle.asn1.ASN1Sequence
So where do I go from here?
EDIT
And now I just restarted Openfire, guess what?
HTTP ERROR 500
Problem accessing /index.jsp. Reason:
java.io.IOExceptionCaused by:
org.apache.commons.httpclient.HttpClientError: java.io.IOException at org.jivesoftware.openfire.clearspace.SSLProtocolSocketFactory.createSSLContext( SSLProtocolSocketFactory.java:73) at org.jivesoftware.openfire.clearspace.SSLProtocolSocketFactory.getSSLContext(SSL ProtocolSocketFactory.java:79) at org.jivesoftware.openfire.clearspace.SSLProtocolSocketFactory.createSocket(SSLP rotocolSocketFactory.java:132) at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707) at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDir ector.java:387) at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirect or.java:171) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323) at org.jivesoftware.util.HttpClientWithTimeoutFeedFetcher.retrieveFeed(HttpClientW ithTimeoutFeedFetcher.java:169) at org.jivesoftware.openfire.admin.index_jsp._jspService(index_jsp.java:432) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:547) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1359) at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 8) at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330) at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:74) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330) at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingF ilter.java:50) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330) at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:78) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330) at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:164) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:478) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:22 7) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:94 1) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:409) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186 ) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:875 ) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandler Collection.java:250) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.jav a:149) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110) at org.eclipse.jetty.server.Server.handle(Server.java:349) at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441) at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConne ction.java:919) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:582) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51 ) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.jav a:586) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java :44) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598 ) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533) at java.lang.Thread.run(Thread.java:744)
So it looks like I get to reinstall this, again, for the 5th time.
EDIT
I was able to get back into it again by refreshing the page (seems random but it worked).
My certificate page now tells me
Unable to access certificate store. The keystore may be corrupt.
One or more certificates are missing. Click here to generate self-signed certificates or here to import a signed certificate and its private key.
Neither buttons really result in anything useful.