Hi, does anyone know what this error means:

Can't find FULLTEXT index matching the column list

occurs when i try to do:

Code:
$thequerystr=mysql_query("SELECT * From content WHERE MATCH (Title,Document,Poster) AGAINST ('$squery')");
if( mysql_num_rows($thequerystr) < 1 ){
so im assuming ive screwed up, but cant seem to find where, as query i am using is as it says on MySQL Documentation at http://www.mysql.com/doc/en/Fulltext_Search.html

Thanks in advance for any assistance you can offer