Hi, I upgraded my Umbraco instance from v7.5.6 to v.7.7.8 using the NuGet Update-Package.

I verified and merged all the config files and, at a first glance everything seemed to work good, but now when trying to leverage Examine I get an exception:

Lucene.Net.Store.AlreadyClosedException; this IndexReader is closed

I can't find anything useful and of course, before the upgrade, I had no problem whatsoever.

Here is the stack trace when I try to run a query through the UI in the backoffice:

at Lucene.Net.Index.IndexReader.EnsureOpen()
   at Lucene.Net.Index.DirectoryReader.GetFieldNames(FieldOption fieldNames)
   at Examine.LuceneEngine.Providers.LuceneSearcher.GetSearchFields() in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\LuceneSearcher.cs:line 248
   at UmbracoExamine.UmbracoExamineSearcher.GetSearchFields()
   at Examine.LuceneEngine.Providers.BaseLuceneSearcher.CreateSearchCriteria(String type, BooleanOperation defaultOperation) in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\BaseLuceneSearcher.cs:line 117
   at UmbracoExamine.UmbracoExamineSearcher.CreateSearchCriteria(String type, BooleanOperation defaultOperation)
   at Examine.LuceneEngine.Providers.BaseLuceneSearcher.CreateSearchCriteria() in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\BaseLuceneSearcher.cs:line 265
   at Examine.LuceneEngine.Providers.BaseLuceneSearcher.Search(String searchText, Boolean useWildcards) in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\BaseLuceneSearcher.cs:line 132
   at Umbraco.Web.WebServices.ExamineManagementApiController.GetSearchResults(String searcherName, String query, String queryType)
   at lambda_method(Closure , Object , Object[] )
   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass10.<GetExecutor>b__9(Object instance, Object[] methodParameters)
   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments)
   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)

Any idea? Thanks, M