I tried to install Silverstripe on my kilu.de account. I followed the installation steps described on your site, but when I accessed the first time the folder where I copied (by FTP client) the locally unpacked files I got:
Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/data/multiserv/users/237215/projects/279827/www/.htaccess/_config.php) is not within the allowed path(s): (/data/multiserv/users/237215/projects/279827:/var/tmp/multiserv/users/237215/projects/279827:/data/apache/users/kilu.de/jburger) in /data/multiserv/users/237215/projects/279827/www/sapphire/core/i18n.php on line 1739
I tried to call the install.php directly and it opened the installation site. I put in the necessary data and the checks were all green, except the one advising me to give PHP more memory.. but it wasn't an error, just a warning.
So, I started the installation. I got again the above mentioned error message.
Accessing my site (http://jburger.kilu.de/), you can see that part of installation was successful, but something went wrong(?) as you can see.