I had to modify install.php to be able to pass directory checks because the fopen function didn't want to open https urls.
I googled around and it can be that my php is not compiled with openssl support. How do I check that?
Also slovenian language is stored in cp-1250 but the meta declares iso-8859-2. I think it would be best to transform it into utf-8 (with iconv).
It worked for me with the default login.php and moodle 1.4.1.
You can easily see if your webserver is conmpile with openssl or mod_ssl loading the page "admin/index.php" and searching for ssl in the output.
hope this can help
forgive my bad english!