If suddenly you get an error like:
Could not insert new word matches
DEBUG MODE
SQL Error : 1016 Can't open file: 'nuke_bbsearch_wordmatch.MYI'. (errno: 145)
INSERT INTO nuke_bbsearch_wordmatch (post_id, word_id, title_match)
SELECT 4467, word_id, 0 FROM nuke_bbsearch_wordlist WHERE word_text IN ('testing')
Line : 282
File : /xxxx/xxxx/public_html/nuke/includes/functions_search.php
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then you will know that your MySQL database has been corrupted. 
In the above example, the nuke_bbsearch_wordmatch table is
damaged (see MySQL errno: 145 Can't open file nuke bbsearch wordmatch.MYI).
Solution: Enter the MySQL prompt from the shell:
mysql -u dbuname -h dbhost -p dbname;
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where dbuname, dbhost and dbname are exactly the same as in your config.php (Section 3.7) - you will also be prompted for your password, which must also be the
same as in config.php - and try the REPAIR TABLE command:
repair table nuke_bbsearch_wordmatch;
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You can also try from the shell command-line the myisamchl utility:
myisamchk -r nuke_bbsearch_wordmatch
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See Section 26.1 on how to repair corrupt tables.
