Install Ajenti 1.0.8 on Debian Wheezy

I'm trying to install ajenti in my server machine.

using apt-get install ajenti I get this error

Setting up ajenti (1.0.8) ...

update-rc.d: error: unable to read /etc/init.d/ajenti

Traceback (most recent call last):

  File "/usr/bin/ajenti-ssl-gen", line 17, in <module>

    conf = json.loads(open(config_path).read())

IOError: [Errno 2] No such file or directory: '/etc/ajenti/config.json'

Something got broken?