Hi guys,

I have a site where we need to search for a node based that may be unpublished and, if found, publish it. So I have an index that doesn't support unpublished nodes which worked (found about 1200 nodes, as expected) but if I change it to support unpublished and try to rebuild the index using the Examine Management tab in the developer section, if fails with an alert saying:

"error: The index could not be rebuilt at this time, most likely there is another thread currently writing to the index. Error: System.NullReferenceException: Object reference not set to an instance of an object"

I'm running Umbraco 6.1.1 and my examine index set, indexer and searcher are as follows:

Index set:

<IndexSet SetName="WSIndexSet" IndexPath="~/App_Data/TEMP/ExamineIndexes/WS/">
   <IndexAttributeFields>
     <add Name="id" />
      <add Name="nodeName"/>
 </IndexAttributeFields>
    <IndexUserFields>
      <add Name="previewVideoURL"/>
      <add Name="filePath"/>
 </IndexUserFields>
 <IncludeNodeTypes>
     <add Name="FootageItem"/>
      <add Name="FootageItemDownload"/>
  </IncludeNodeTypes>
    <ExcludeNodeTypes />
</IndexSet>

Indexer:

<add name="WSIndexer" type="UmbracoExamine.UmbracoContentIndexer, UmbracoExamine"
   indexSet="WSIndexSet"
    supportUnpublished="true"
    supportProtected="false"
 analyzer="Lucene.Net.Analysis.Standard.StandardAnalyzer, Lucene.Net"/>

Searcher:

<add name="WSSearcher"
  type="UmbracoExamine.UmbracoExamineSearcher, UmbracoExamine"
 indexSet="WSIndexSet"
    analyzer="Lucene.Net.Analysis.Standard.StandardAnalyzer, Lucene.Net"/>

Thanks in advance everyone!