Unknown column 'torrents.afterpre' in 'field list'

[carloscorp]

In the file www.exemple/browse.php appears this error

 (Unknown column 'torrents.afterpre' in 'field list')

in a blank page.

Any hint to solve this?

Best regards

Sorry for my bad English xD

[klonoa2]

ALTER TABLE `torrents` ADD `afterpre` TEXT default NULL;