Cannot setup local mirror (avast4)

[slavb]

I use this servers definitions file,
-------------------------
[servers]
count=1

[server0]
name=My Server
url=http://localhost/avast
-----------------------

The error is:
Server definition file for 'main' (D:\Program Files\Alwil Software\Avast4\Setup\servers.def) is invalid.

How to fix this error?
May be this is becouse there is no signature in this file?

[kubecj]

Exactly, you must not change servers.def file.

[slavb]

Exactly, you must not change servers.def file.

How to tell Avast to load updates from my server ?

I made local mirror using perl scripts dowloaded from Avast! web site.

In iAVS documentation I read the following: (p. 4.1. How to mirror):

.. create the following files:
servers.def with settings of our servers
...