title: Why can't Luke(4.0.0-ALPHA) open the Lucene4.0's index files?
body: <p>I used Lucene4.0 to make index files:</p>
  
  <pre><code>File directorycreate = new File(indexpath);         
                  Directory dir = new SimpleFSDirectory(directorycreate);
                  Analyzer analyzer = new IKAnalyzer(true);
                  IndexWriterConfig conf = new IndexWriterConfig(Version.LUCENE_40, analyzer);
                  IndexWriter writer = new IndexWriter(dir,conf);
                      Document document = new Document();
                      FieldType fieldtype = new FieldType();
                      fieldtype.setIndexed(true);
                      fieldtype.setTokenized(true);
                      fieldtype.setStored(true);
                      fieldtype.setStoreTermVectorPositions(true);
                      fieldtype.setStoreTermVectors(true);
                      document.add(new Field("title",name,fieldtype));
                      document.add(new Field("content",description,fieldtype));
                      document.add(new Field("contenttype", "product",TextField.TYPE_STORED));
                      document.add(new Field("doctype","product",TextField.TYPE_STORED));
  
          This is my index files:
          2013/01/03  10:49    &lt;DIR&gt;          .
          2013/01/03  10:49    &lt;DIR&gt;          ..
          2013/01/03  10:49                20 segments.gen
          2013/01/03  10:49                69 segments_1
          2013/01/03  10:49        16,566,094 _0.fdt
          2013/01/03  10:49           526,786 _0.fdx
          2013/01/03  10:49               459 _0.fnm
          2013/01/03  10:49               357 _0.si
          2013/01/03  10:49           307,358 _0.tvd
          2013/01/03  10:49        17,926,810 _0.tvf
          2013/01/03  10:49         1,053,537 _0.tvx
          2013/01/03  10:49         2,946,878 _0_Lucene40_0.frq
          2013/01/03  10:49         2,548,982 _0_Lucene40_0.prx
          2013/01/03  10:49            18,903 _0_Lucene40_0.tim
          2013/01/03  10:49               332 _0_Lucene40_0.tip
          2013/01/03  10:49               165 _0_nrm.cfe
          2013/01/03  10:49           329,336 _0_nrm.cfs
  </code></pre>
  
  <p>But the lukeall-4.0.0-ALPHA.jar
  (http://code.google.com/p/luke/downloads/list) can't open these index files with an error:
  Format version is not supported (resource: SimpleFSIndexInput(path="D:\myProjectPro\Java\createIndex\product_0.tvx")): 1 (needs to be between 0 and 0).</p>
  
  <p>Any ideas?
  Thanks in advance.</p>