[xwiki-users] Problem moving doc within space

Hello all, I am brand new to XWiki and am just getting my feet wet, so please forgive my ignorance. I have installed XWiki Enterprise 5.4.3 on a Ubuntu VM and am authenticating using an Apache https web server. When I attempt to move a document within a space, by attempting to edit the parent, I get the error "Failed to retrieve suggestions: Internal Server Error" in the GUI when I type into the parent field. I also get a corresponding error in the Catalina log: Apr 04, 2014 11:29:09 AM org.restlet.engine.security.AuthenticatorUtils parseResponse WARNING: Couldn't find any helper support the HTTP_Digest challenge scheme. Apr 04, 2014 11:29:09 AM org.restlet.engine.application.StatusFilter doHandle WARNING: Exception or error caught in status service java.lang.NullPointerException at java.lang.String.<init>(String.java:168) at org.xwiki.rest.internal.XWikiSecretVerifier.verify(XWikiSecretVerifier.java:71) at org.restlet.security.SecretVerifier.verify(SecretVerifier.java:130) at org.restlet.security.ChallengeAuthenticator.authenticate(ChallengeAuthenticator.java:162) at org.xwiki.rest.internal.XWikiAuthentication.authenticate(XWikiAuthentication.java:133) at org.restlet.security.Authenticator.beforeHandle(Authenticator.java:122) at org.restlet.routing.Filter.handle(Filter.java:204) at org.restlet.routing.Filter.doHandle(Filter.java:159) at org.restlet.routing.Filter.handle(Filter.java:206) at org.restlet.routing.Filter.doHandle(Filter.java:159) at org.restlet.routing.Filter.handle(Filter.java:206) at org.restlet.routing.Filter.doHandle(Filter.java:159) at org.restlet.routing.Filter.handle(Filter.java:206) at org.restlet.routing.Filter.doHandle(Filter.java:159) at org.restlet.engine.application.StatusFilter.doHandle(StatusFilter.java:154) at org.restlet.routing.Filter.handle(Filter.java:206) at org.restlet.routing.Filter.doHandle(Filter.java:159) at org.restlet.routing.Filter.handle(Filter.java:206) at org.restlet.engine.ChainHelper.handle(ChainHelper.java:114) at org.restlet.engine.application.ApplicationHelper.handle(ApplicationHelper.java:75) at org.restlet.Application.handle(Application.java:391) at org.restlet.routing.Filter.doHandle(Filter.java:159) at org.restlet.routing.Filter.handle(Filter.java:206) at org.restlet.routing.Router.doHandle(Router.java:500) at org.restlet.routing.Router.handle(Router.java:740) at org.restlet.routing.Filter.doHandle(Filter.java:159) at org.restlet.routing.Filter.handle(Filter.java:206) at org.restlet.routing.Router.doHandle(Router.java:500) at org.restlet.routing.Router.handle(Router.java:740) at org.restlet.routing.Filter.doHandle(Filter.java:159) at org.restlet.routing.Filter.handle(Filter.java:206) at org.restlet.engine.ChainHelper.handle(ChainHelper.java:114) at org.restlet.Component.handle(Component.java:391) at org.restlet.Server.handle(Server.java:491) at org.restlet.engine.ServerHelper.handle(ServerHelper.java:74) at org.restlet.engine.http.HttpServerHelper.handle(HttpServerHelper.java:153) at org.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:1031) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.xwiki.wysiwyg.server.filter.XWikiContextInitializationFilter.doFilter(XWikiContextInitializationFilter.java:85) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) This would lead me to believe that some part of XWiki does not like the fact that I am using Digest authentication; however, other than this, it would appear that XWiki is perfectly happy with my configuration. Does this error make any sense to someone out there? Thanks, Justin