I am having the same problem.
When I go to https://www…..install.php I get this weird error:
Warning: require(/home/(user)/public_html/wordpress/wp-includes/default-constants.php) [function.require]: failed to open stream: No such file or directory in /home/(user)/public_html/wordpress/wp-settings.php on line 22
Fatal error: require() [function.require]: Failed opening required ‘/home/(user)/public_html/wordpress/wp-includes/default-constants.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/(user)/public_html/wordpress/wp-settings.php on line 22
If I figure it out, I’ll post again.