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.Store.IndexInput.ReadString() in d:\Lucene.Net\FullRepo\trunk\src\core\Store\IndexInput.cs:line 142
   at Lucene.Net.Index.FieldsReader.AddField(Document doc, FieldInfo fi, Boolean binary, Boolean compressed, Boolean tokenize) in d:\Lucene.Net\FullRepo\trunk\src\core\Index\FieldsReader.cs:line 407
   at Lucene.Net.Index.FieldsReader.Doc(Int32 n, FieldSelector fieldSelector) in d:\Lucene.Net\FullRepo\trunk\src\core\Index\FieldsReader.cs:line 250
   at Dynamicweb.Indexing.Lucene.LuceneIndexProvider.DoSearch(Int32 skip, ScoreDoc[] docs, IndexSearcher searcher, FieldDefinitionBase[] fields)
   at Dynamicweb.Indexing.Lucene.LuceneIndexProvider.SearchInternal(IQuery query, QuerySettings settings)
   at Dynamicweb.Indexing.Querying.QueryService.Query(IQuery query, QuerySettings settings)
   at Dynamicweb.QueryPublisher.Frontend.GetContent()
   at Dynamicweb.Frontend.Content.GetModuleOutput(Paragraph paragraph, PageView pageview)