OT: well sort of.. what does this mean?

I got this message :?? :pout: when I tried to respond to a post:

[color=red]Could not insert new word matches


SQL Error : 1016 Can’t open file: ‘phpbb_search_wordmatch.MYI’ (errno: 145)

INSERT INTO phpbb_search_wordmatch (post_id, word_id, title_match) SELECT 393603, word_id, 0 FROM phpbb_search_wordlist WHERE word_text IN (‘half’, ‘m’, ‘amp’, ‘rofl’, ‘hug’, ‘lol’, ‘first’, ‘chuckle’, ‘ingrid’, ‘anne’)

Line : 251
File : /home/knittinghelp/public_html/knitting/forum/includes/functions_search.php[/color]