I've searched through the various threads on the installation forum and am not sure that anyone has found this same issue. I see lots of 'blank page' install.php errors, but haven't seen one where someone has seen the 'can't open the page' error on Safari, or where the file tries to open when you hit that page in Firefox.
I was able to launch the install process and receive the wp-config.php info - although it told me that it couldn't write the file and that I'd need to manually install it. I went ahead and did so, but then hit a roadblock when the wp-admin/install.php file was hit. The file, by the way, is in the wp-admin directory (I have confirmed that it was there) but I receive a 'failed to open page/can't open the page' error when I try to open the page in Safari.
Incidentally, the hosting company is running the Plesk platform and I have installed the WordPress files in the httpdocs directory. Clearly, if its starting the process, the directory info etc... should be okay - but I'm not sure why its stopping when it hits the install.php file.
Thanks so much in advance!!!