Here are a couple errors I've found installing rev 559. In wp-admin\index.php line 5, it still points to rss-functions.php but that file has been replaced by rss.php and in the wp-admin\upgrade-schema.php on line 124 there is "; which looks like that isn't supposed to be there and you'll get errors when installing so just delete them. The query is correctly closed on line 222.