Hi all, I am using Umbraco Examine to search through the nodes. I've got the simplest configuration that is in Examine quick start guide and then I use the searcher like this

 var Searcher = ExamineManager.Instance.SearchProviderCollection["ExternalSearcher"];
        var searchCriteria = Searcher.CreateSearchCriteria();
        var query = searchCriteria.Field("nodeTypeAlias", nodeTypeAlias);
        if (keyword != "")
        {
            query.And().GroupedOr(new string[] { "title", "description" }, keyword);
        }

        if (categories != "")
        {
            query.And().GroupedOr(new string[] { "categories" }, categories.Split(','));
        }

        if (tags != "")
        {
            query.And().GroupedOr(new string[] { "tags" }, tags.Split(','));
        }

        return Searcher.Search(query.Compile());

Locally everthing works fine. When I add a node through CMS (example hotel) the API that returns all the hotels is updated. I can unpublish the node I just added, everything is OK. BUT, on prod examine is not working. When I add new hotel and then call the hotels API I get an error "ExceptionMessage": "this IndexReader is closed", "ExceptionType": "Lucene.Net.Store.AlreadyClosedException".

Weird thing is when I then run the website locally (I use the same database connection string locally and on prod) it seems that the indexer is updated and then when I try to call the API again everything is OK. That made me believe that I should maybe rebuild the indexer so I added this line to "published" and "saved" Umbraco events

ExamineManager.Instance.IndexProviderCollection["ExternalIndexer"].RebuildIndex();

but that didn't help. I just can't understand why locally everything works fine but on prod it is not. I am using a VPS, Windows server 2008 R2, I don't have much experience in hosting (I copied all the folders in my website physical path, including AppData, Umbraco, UmbracoClient... ) and I don't know If I did that right. I mean everything is working except for this. Please help. I'd be happy to provide more details just comment please. BR, Kevin