[FleaBag]

Nevermind, fixed it. The following query did the job.

DROP TABLE IF EXISTS attachment;
CREATE TABLE attachment (
   attachmentid smallint(5) unsigned NOT NULL auto_increment,
   userid int(10) unsigned NOT NULL,
   dateline int(10) unsigned NOT NULL,
   filename varchar(100) NOT NULL,
   filedata mediumtext NOT NULL,
   visible smallint(5) unsigned NOT NULL,
   counter smallint(5) unsigned NOT NULL,
   PRIMARY KEY (attachmentid)
);