mephisto install

Hi There,

cant install mephisto using install scripts, how can i fix?

Found http://s3.amazonaws.com:80/mephisto-blog/mephisto-0.7.3.tar.gz in cache ..

Now installing Mephisto version 0.7.3 ..
HTTP/1.0 500 Perl execution failed Server: MiniServ/0.01 Date: Mon, 16 Jun 2008 23:13:14 GMT Content-type: text/html Connection: close
Error - Perl execution failed

Undefined subroutine &virtual_server::find_mongrel_rails called at /usr/share/webmin/virtual-server/scripts/mephisto.pl line 178.

Status: 
Closed (fixed)