Trouble with solr IndexbasedSpellChecker and FilebasedSpellChecker

[Kartik Desikan]

Hi folks,

I'm using solr 1.3
Here is the relevant section from my solrconfig.xml

<searchComponent name="spellcheck" class="solr.SpellCheckComponent">
                <!-- <str name="queryAnalyzerFieldType">textSpell</str> -->

                <lst name="spellchecker">
                <str name="name">default</str>
                <!-- <str name="classname">solr.IndexBasedSpellChecker</str>
-->
                <!-- <str name="field">DESC</str> -->
                <!-- <str name="spellcheckIndexDir">./spellchecker</str> -->
                <str name="classname">solr.FileBasedSpellChecker</str>
                <str name="sourceLocation">/tmp/dct.txt</str>
                <str name="spellcheckIndexDir">./filespellchecker</str>
                <str name="accuracy">0.7</str>
                </lst>
</searchComponent>

Neither the indexbasedspellchecker, nor the filebasedchecker works for me.
What happens is that after I add the spellcheck component in the solrconfig
and subsequently restart my resin(3.16) server, my data index gets removed.

Before:
47M    webapps/index/solr/data/index
47M    webapps/index/solr/data/
After:
12K    webapps/index/solr/data/index
12K    webapps/index/solr/data/filespellchecker
28K    webapps/index/solr/data/

Can anyone clue me into why this is happening?

Thanks a lot!
Kartik