by Howard Miller.
Forget it... delete/recreate the database and start again.
When you get errors like that something has gone badly wrong during the installation and the database is, effectively, corrupt.
If you still have problems, the next step is to create config.php 'by hand'. You can then enable debugging by uncommenting lines in section 7. Then watch (and check web server's error log) very carefully for anything odd happening during the install.