[fel64]

It may be easiest to modify the database entry. Backup your databases, then open PHP MyAdmin or the like.

You need to know your user id number, which is probably the number in the URL when you go to your profile. Run a query like

SELECT * FROM wp_usermeta WHERE user_id = 1 AND meta_key = 'bb_capabilities' (changing 1 to your user id) to show the relevant field. Edit this entry so that you’re made a Key Master again. I don’t know what it should be, but for my account (I’m a Key Master) it’s

a:1:{s:9:"keymaster";b:1;}

Since this may break things, you need to have a database backup first.