Hi, I’m having the exact same problem! I just followed the 5 minute instructions, and I get the garbled page when I go to <https://localhost:8080/wordpress/wp-admin/install.php>
I set up the mysql database and user manually in mysql 5.1.
I’ve verified that the user exists with a password and all grants for localhost, and that the database exists (with no tables).
Other sites on my localhost are fine.
Any ideas?
-Angus