[Owncloud] Master not working?

[Jan Sommer]

Hello,

I just tried to install owncloud new from master. But when I want to start  
localhost/owncloud to get the setup wizard it gives me a 500 server error.
The apache error-log states:

[Sat Dec 17 22:19:09 2011] [alert] [client 127.0.0.1]  
/var/www/owncloud/.htaccess: Invalid command 'RewriteEngine', perhaps  
misspelled or defined by a module not included in the server configuration
[Sat Dec 17 22:19:09 2011] [error] [client 127.0.0.1] File does not exist:  
/var/www/favicon.ico, referer: http://localhost/owncloud

As the same procedure worked well with the 2.0.1 release, I guess this  
time it's not me? ;-)

Best regards,

    Jan