Problem with redaxo install

[urs]

Hi

I'm trying to install redaxo cms on my litespeed server. In the install routine of redaxo is a test that a directory is not reachable.
I enabled the .htaccess but i still get an empty page if i try to reach a page in the folder and not an error page.
htaccess=
order deny,allow
deny from all

I still can open files in that folder....

any ideas how i can install redaxo?

regards

Urs