System.Exception: Exception while creating a value. ---> System.IO.IOException: An unexpected network error occurred.

   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.ReadCore(Byte[] buffer, Int32 offset, Int32 count)
   at System.IO.FileStream.Read(Byte[] array, Int32 offset, Int32 count)
   at System.IO.BinaryReader.Read(Byte[] buffer, Int32 index, Int32 count)
   at Lucene.Net.Store.SimpleFSDirectory.SimpleFSIndexInput.ReadInternal(Byte[] b, Int32 offset, Int32 len)
   at Lucene.Net.Store.BufferedIndexInput.ReadBytes(Byte[] b, Int32 offset, Int32 len, Boolean useBuffer)
   at Lucene.Net.Index.CompoundFileReader.CSIndexInput.ReadInternal(Byte[] b, Int32 offset, Int32 len)
   at Lucene.Net.Store.BufferedIndexInput.Refill()
   at Lucene.Net.Store.BufferedIndexInput.ReadByte()
   at Lucene.Net.Store.IndexInput.ReadVInt()
   at Lucene.Net.Index.TermBuffer.Read(IndexInput input, FieldInfos fieldInfos)
   at Lucene.Net.Index.SegmentTermEnum.Next()
   at Lucene.Net.Index.SegmentTermEnum.ScanTo(Term term)
   at Lucene.Net.Index.TermInfosReader.Get(Term term, Boolean useCache)
   at Lucene.Net.Index.TermInfosReader.Terms(Term term)
   at Lucene.Net.Index.SegmentReader.Terms(Term t)
   at Lucene.Net.Index.DirectoryReader.MultiTermEnum..ctor(IndexReader topReader, IndexReader[] readers, Int32[] starts, Term t)
   at Lucene.Net.Index.DirectoryReader.Terms(Term term)
   at Lucene.Net.Search.WildcardTermEnum..ctor(IndexReader reader, Term term)
   at Lucene.Net.Search.WildcardQuery.GetEnum(IndexReader reader)
   at Lucene.Net.Search.MultiTermQuery.ConstantScoreAutoRewrite.Rewrite(IndexReader reader, MultiTermQuery query)
   at Lucene.Net.Search.WildcardQuery.Rewrite(IndexReader reader)
   at Lucene.Net.Search.BooleanQuery.Rewrite(IndexReader reader)
   at Lucene.Net.Search.BooleanQuery.Rewrite(IndexReader reader)
   at Lucene.Net.Search.IndexSearcher.Rewrite(Query original)
   at Lucene.Net.Search.Query.Weight(Searcher searcher)
   at Lucene.Net.Search.Searcher.CreateWeight(Query query)
   at Lucene.Net.Search.Searcher.Search(Query query, Collector results)
   at Examine.LuceneEngine.SearchResults.DoSearch(Query query, IEnumerable`1 sortField, Int32 maxResults) in C:\projects\examine-qvx04\src\Examine\LuceneEngine\SearchResults.cs:line 110
   at Examine.LuceneEngine.Providers.BaseLuceneSearcher.Search(ISearchCriteria searchParams, Int32 maxResults) in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\BaseLuceneSearcher.cs:line 182
   at Examine.LuceneEngine.Providers.BaseLuceneSearcher.Search(ISearchCriteria searchParams) in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\BaseLuceneSearcher.cs:line 163
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.GetUmbracoMediaCacheValues(Int32 id)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.<>c__DisplayClass38_0.<GetCacheValues>b__0()
   at Umbraco.Core.Cache.DictionaryCacheProviderBase.<>c__DisplayClass10_0.<GetSafeLazy>b__0()
   --- End of inner exception stack trace ---
   at Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItemInternal(String cacheKey, Func`1 getCacheItem, Nullable`1 timeout, Boolean isSliding, CacheItemPriority priority, CacheItemRemovedCallback removedCallback, Func`1 dependency)
   at Umbraco.Core.Cache.HttpRuntimeCacheProvider.GetCacheItem(String cacheKey, Func`1 getCacheItem, Nullable`1 timeout, Boolean isSliding, CacheItemPriority priority, CacheItemRemovedCallback removedCallback, String[] dependentFiles)
   at Umbraco.Core.Cache.DeepCloneRuntimeCacheProvider.GetCacheItem(String cacheKey, Func`1 getCacheItem, Nullable`1 timeout, Boolean isSliding, CacheItemPriority priority, CacheItemRemovedCallback removedCallback, String[] dependentFiles)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.GetCacheValues(Int32 id, Func`2 func)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.GetUmbracoMedia(Int32 id)
   at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedMediaCache.GetById(UmbracoContext umbracoContext, Boolean preview, Int32 nodeId)
   at Umbraco.Web.PublishedCache.ContextualPublishedCache`1.GetById(Boolean preview, Int32 contentId)
   at Umbraco.Web.PublishedContentQuery.DocumentById(Int32 id, ContextualPublishedCache cache, Object ifNotFound)
   at Umbraco.Web.PublishedContentQuery.Media(Int32 id)
   at Umbraco.Web.UmbracoHelper.Media(String id)
   at ASP._Page_app_plugins_allegro_subheroimagediagonal_show_cshtml.Execute()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
   at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
   at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model)
   at ASP._Page_Views_Partials_grid_editors_base_cshtml.Execute()