Run the following sql query in phpMyAdmin
Code:
DROP TABLE IF EXISTS nuke_authors;
CREATE TABLE nuke_authors (
aid varchar(25) NOT NULL default '',
name varchar(50) default NULL,
url varchar(255) NOT NULL default '',
email varchar(255) NOT NULL default '',
pwd varchar(40) default NULL,
counter int(11) NOT NULL default '0',
radminsuper tinyint(1) NOT NULL default '1',
admlanguage varchar(30) NOT NULL default '',
PRIMARY KEY (aid),
KEY aid (aid)
) TYPE=MyISAM;
That will reset the admin username & password, then visit yoursite.com/admin.php to set things up again.
NB: Before you try and enter your sites admin.php sometimes it helps to delete all browser cookies & history.