Sitecore 6.6 Lucene.Net upgrade issue - sitecore

Question

I recently upgraded my Sitecore installation from 6.5 to 6.6. Part of this upgrade also upgrades the Lucene.Net library from 2.3.1.3 to 2.9.4.1, which introduces some breaking changes. The code base used a lot of custom code around the Lucene.Net search engine, which had to be removed for the installation to work. Now that I've done that, I'm trying to re-implement the search functions, but I can't get the simplest search to compile. For example, this code:
using (var sc = SearchManager.GetIndex("system").CreateSearchContext())
{
var query = new FullTextQuery("health");
SearchHits hits = sc.Search(query);
}
produces this error:
Error 104 The type 'Lucene.Net.Search.Query' is defined in an assembly
that is not referenced. You must add a reference to assembly
'Lucene.Net, Version=2.3.1.3, Culture=neutral,
PublicKeyToken=null'.
I've confirmed that I only have the 2.9.4.1 version of Lucene.Net referenced in my project. Why is this code looking for the 2.3.1.3 version?

Answer 1

#MarkCassidy nailed it - I did the upgrade on the server, but I was developing locally, so my local copy of the Sitecore.Kernal DLL was still at 6.5. Copying the 6.6 version down locally cleared up the compile error and let me know that my code example is obsolete, which is more along the lines of what I was expecting.