Upgrade failed from 4.6.6 to 4.7RC

I tried to upgrade from 4.6.6 an get the following messages (this is only a part of them)

Warning: Unknown column 'referer' in 'field list' query: INSERT INTO watchdog (uid, type, message, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', 'Table 'db0508101.node_revisions' doesn't exist\nquery: SELECT n.nid, n.vid, n.type, n.status, n.created, n.changed, n.comment, n.promote, n.moderate, n.sticky, r.timestamp AS revision_timestamp, r.title, r.body, r.teaser, r.log, r.format, u.uid, u.name, u.picture, u.data FROM node n INNER JOIN users u ON u.uid = n.uid INNER JOIN node_revisions r ON r.vid = n.vid WHERE n.nid = 2 in W:\\www\\includes\\database.mysql.inc in Zeile 120.', 2, '', '/', '', '127.0.0.1', 1144262615) in W:\www\includes\database.mysql.inc on line 120

Warning: Unknown column 'referer' in 'field list' query: INSERT INTO watchdog (uid, type, message, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', 'array_keys() [function.array-keys]: The first argument should be an array in W:\\www\\includes\\menu.inc in Zeile 1186.', 2, '', '/', '', '127.0.0.1', 1144262615) in W:\www\includes\database.mysql.inc on line 120

Warning: Unknown column 'referer' in 'field list' query: INSERT INTO watchdog (uid, type, message, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', 'Wrong parameter count for min() in W:\\www\\includes\\menu.inc in Zeile 1186.', 2, '', '/', '', '127.0.0.1', 1144262615) in W:\www\includes\database.mysql.inc on line 120

what's wrong, any idea?