error in suggester component in solr

["anurag.sharma" <an...@gmail.com>]

I am working with solr auto complete functionality,I am using solr 4.50 to
build my application, and I am following this link as a reference.
http://lucene.472066.n3.nabble.com/auto-completion-search-with-solr-using-NGrams-in-SOLR-td3998559i20.html

 My suggest component is something like this

      <searchComponent class="solr.SpellCheckComponent" name="suggest">
        <lst name="spellchecker">
          <str name="name">suggest</str>
          <str
name="classname">org.apache.solr.spelling.suggest.Suggester</str>
          <str
name="lookupImpl">org.apache.solr.spelling.suggest.tst.TSTLookup</str>      
          <str name="storeDir">suggest</str>
          <str name="field">autocomplete_text</str>
          <bool name="exactMatchFirst">true</bool>
          <float name="threshold">0.005</float>
          <str name="buildOnCommit">true</str>
          <str name="buildOnOptimize">true</str>
        </lst>
       <lst name="spellchecker">
          <str name="name">jarowinkler</str>  
          <str name="field">lowerfilt</str>  
          <str
name="distanceMeasure">org.apache.lucene.search.spell.JaroWinklerDistance</str>  
          <str name="spellcheckIndexDir">spellchecker</str>  
       </lst>
         <str name="queryAnalyzerFieldType">edgytext</str>  
      </searchComponent>


but, I am getting the following error

    *org.apache.solr.spelling.suggest.Suggester  – Loading stored lookup
data failed
    java.io.FileNotFoundException:
/home/anurag/Downloads/solr-4.4.0/example/solr/collection1/data/suggest/tst.dat
(No such file or directory)*

It says that some file are missing but the solr wiki suggester component
says it supports these lookupImpls --

    *<str
name="lookupImpl">org.apache.solr.spelling.suggest.tst.TSTLookup</str>
          
*
Dont know what I am doing wrong..... Any help will be deeply appreciated




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