[kh99]

I don't know why that would happen or what the repair functions actually do, but - Here's part of install/mysql-schema.php:

CREATE TABLE " . TABLE_PREFIX . "access (
	userid INT UNSIGNED NOT NULL DEFAULT '0',
	forumid SMALLINT UNSIGNED NOT NULL DEFAULT '0',
	accessmask SMALLINT UNSIGNED NOT NULL DEFAULT '0',
	PRIMARY KEY userid (userid, forumid)
)

So there definitely should be a forumid and userid column. Seeing as that table doesn't have any rows in it (because you said you deleted them all) I think if it were me I might just try to recreate it using the SQL above (replacing the " . TABLE_PREFIX. " with the actual table prefix, of course).