An error occurred while attaching module (Dynamicweb.Frontend.Content)

System.ObjectDisposedException: Cannot access a closed file.
   at System.IO.__Error.FileNotOpen()
   at System.IO.BinaryReader.Read(Byte[] buffer, Int32 index, Int32 count)
   at Lucene.Net.Store.SimpleFSDirectory.SimpleFSIndexInput.ReadInternal(Byte[] b, Int32 offset, Int32 len) in d:\Lucene.Net\FullRepo\trunk\src\core\Store\SimpleFSDirectory.cs:line 174
   at Lucene.Net.Store.BufferedIndexInput.Refill() in d:\Lucene.Net\FullRepo\trunk\src\core\Store\BufferedIndexInput.cs:line 187
   at Lucene.Net.Store.BufferedIndexInput.ReadBytes(Byte[] b, Int32 offset, Int32 len, Boolean useBuffer) in d:\Lucene.Net\FullRepo\trunk\src\core\Store\BufferedIndexInput.cs:line 138
   at Lucene.Net.Store.BufferedIndexInput.ReadBytes(Byte[] b, Int32 offset, Int32 len) in d:\Lucene.Net\FullRepo\trunk\src\core\Store\BufferedIndexInput.cs:line 107
   at Lucene.Net.Index.TermBuffer.Read(IndexInput input, FieldInfos fieldInfos) in d:\Lucene.Net\FullRepo\trunk\src\core\Index\TermBuffer.cs:line 98
   at Lucene.Net.Index.SegmentTermEnum.Next() in d:\Lucene.Net\FullRepo\trunk\src\core\Index\SegmentTermEnum.cs:line 147
   at Lucene.Net.Search.FieldCacheImpl.StringCache.CreateValue(IndexReader reader, Entry entryKey) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\FieldCacheImpl.cs:line 765
   at Lucene.Net.Search.FieldCacheImpl.Cache.Get(IndexReader reader, Entry key) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\FieldCacheImpl.cs:line 238
   at Lucene.Net.Search.FieldCacheImpl.GetStrings(IndexReader reader, String field) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\FieldCacheImpl.cs:line 736
   at Dynamicweb.Indexing.Lucene.LuceneIndexProvider.CaseIgonreComparator.SetNextReader(IndexReader reader, Int32 docBase)
   at Lucene.Net.Search.IndexSearcher.Search(Weight weight, Filter filter, Collector collector) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\IndexSearcher.cs:line 238
   at Lucene.Net.Search.IndexSearcher.Search(Weight weight, Filter filter, Int32 nDocs, Sort sort, Boolean fillFields) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\IndexSearcher.cs:line 212
   at Lucene.Net.Search.IndexSearcher.Search(Weight weight, Filter filter, Int32 nDocs, Sort sort) in d:\Lucene.Net\FullRepo\trunk\src\core\Search\IndexSearcher.cs:line 194
   at Dynamicweb.Indexing.Lucene.LuceneIndexProvider.SearchInternal(IQuery query, QuerySettings settings)
   at Dynamicweb.Indexing.Querying.QueryService.Query(IQuery query, QuerySettings settings)
   at Dynamicweb.Ecommerce.Indexing.ProductQueryHelper.ExecuteQuery(IQuery query, QuerySettings settings, PageView pageview)
   at Dynamicweb.Ecommerce.Indexing.ProductQueryHelper.GetProductsAutoIdsFromIndexQuery(IQuery query, QuerySettings querySettings, PageView pageview, Boolean showFacetOptionsWithNoResults, IEnumerable`1& facetViewModel, IEnumerable`1& spellCheckerResult, Int32& totalProductCount)
   at Dynamicweb.Ecommerce.Indexing.ProductQueryHelper.GetProductsAutoIds(ProductCatalogSettings settings, ContentModule contentModule, PageView pageview, IEnumerable`1& facetViewModel, IEnumerable`1& spellCheckerResult)
   at Dynamicweb.Ecommerce.ProductCatalog.ProductCatalogFrontend.RenderProductList(ProductCatalogSettings settings, String groupId, Boolean feed)
   at Dynamicweb.Ecommerce.ProductCatalog.ProductCatalogFrontend.GetContent()
   at Dynamicweb.Frontend.Content.GetModuleOutput(Paragraph paragraph, PageView pageview)