Deleting a filter referenced by a Show Saved Filter portlet makes the dashboard with that portlet die

2005-05-09 18:58:17,117 ERROR [500ErrorPage] Exception caught in 500 page null
java.lang.NullPointerException
at com.atlassian.jira.portal.portlets.SearchRequestPortlet.getLinkToSearch(SearchRequestPortlet.java:65)
at com.atlassian.jira.portal.portlets.AbstractSearchResultsPortlet.getVelocityParams(AbstractSearchResultsPortlet.java:76)
at com.atlassian.jira.portal.portlets.SearchRequestPortlet.getVelocityParams(SearchRequestPortlet.java:86)
at com.atlassian.jira.portal.PortletImpl.getViewHtml(PortletImpl.java:50)
at com.atlassian.jira.portal.portlets.AbstractRequiresUserPortlet.getViewHtml(AbstractRequiresUserPortlet.java:23)
at secure._views._dashboardjsp._jspService(_dashboard_jsp.java:1602)
at com.caucho.jsp.JavaPage.service(JavaPage.java:75)
at com.caucho.jsp.Page.subservice(Page.java:497)
at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:182)
at com.caucho.server.http.Invocation.service(Invocation.java:315)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:115)
at com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:225)
at com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:106)
at com.caucho.server.http.QRequestDispatcher.forward(QRequestDispatcher.java:83)
at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:142)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:58)
at com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:38)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:168)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:177)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
at com.atlassian.jira.web.filters.ProfilingAndErrorFilter.doFilter(ProfilingAndErrorFilter.java:25)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.jira.web.filters.ActionCleanupDelayFilter.doFilter(ActionCleanupDelayFilter.java:37)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.johnson.filters.JohnsonFilter.doFilter(JohnsonFilter.java:91)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.jira.web.filters.gzip.GzipFilter.doFilter(GzipFilter.java:72)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:36)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.caucho.server.http.Invocation.service(Invocation.java:315)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:246)
at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:164)
at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
at java.lang.Thread.run(Thread.java:534)