Dashboard breaks after upgrading to 3.2

Immediately after upgrading, I got the following error on my dashboard:

2005-05-09 19:41:48,324 ERROR [jira.portal.portlets.AbstractSearchResultsPortlet] Could not get issues
java.lang.NullPointerException
at com.atlassian.jira.issue.search.providers.LuceneSearchProvider.loadDocuments(LuceneSearchProvider.java:204)
at com.atlassian.jira.issue.search.providers.LuceneSearchProvider.search(LuceneSearchProvider.java:168)
at com.atlassian.jira.portal.portlets.AbstractSearchResultsPortlet.getSearchResults(AbstractSearchResultsPortlet
.java:118)
at com.atlassian.jira.portal.portlets.AbstractSearchResultsPortlet.getVelocityParams(AbstractSearchResultsPortle
t.java:55)
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:2
3)
at _jspPage0_secure_views_dashboard_jsp._jspService(_jspPage0_secure_views_dashboard_jsp.java:2494)
at com.orionserver.http.OrionHttpJspPage.service(.:70)
at com.evermind._ay._rkb(.:5741)

Reindexing seemed to fix this.