Can't even open install.php!

[ajurie]

I just had the same thing happen. So to check my php I created a phpversion.php file with just this inside it. <?php phpinfo() ?> This showed me I was using php4. Then I googled 1and1 (my hosting company) and php5; and found that I needed to create a .htaccess file with this in it, (AddType x-mapp-php5 .php) do not include brackets, to change to php5.

And it worked