Error while re-installing

I’ve downloaded the latest version of wordpress (3.1.1), modified the wp-config-sample.php file changing the DB_NAME, DB_USER, DB_PASSWORD and DB_HOST fields only, renamed it to wp-config.php and uploaded everything.

When I try to launch the wp-admin/install.php file I just get a general error message.

Notes: (may help)
? I’m using Aruba.it as web hosting company.
? I’m trying to install wordpress on https://www.gordonirvingdesign.com
? When I tried to firstly open up the wp-admin/install.php page it didn’t work, so I’ve had to change the wp-config-sample.php file manually.
? I’m on a Mac and I’ve used Cyberduck to upload everything.
? I used to keep an old wordpress blog on the same domain. Then something went wrong during an update so I’ve cleaned it and now I’m trying to reinstall it.
? I’ve already cleaned all the mysql database tables.

Thanks in advance for your time.

Gordon