setup-kolab: augeas.py", line 385, in save raise IOError("Unable to save to file!")

[Honza Burian]

Hi there,
I'm trying to install kolab on my VPS: Centos 6, 1CPU, 1GB RAM.
All packages installed successfully from repository.
Then I run setup-kolab command. After setup of 389 direcotry server
setup is asking for enter passwords for cyrus-admin and kolab-service
accounts. After that I get this error:

----------------------------------
Cyrus Administrator password [Gs-SKNjMBLo4xIp]:
Confirm Cyrus Administrator password:

Please supply a Kolab Service account password. This account is used by various
services such as Postfix, and Roundcube, as anonymous binds to the LDAP server
will not be allowed.

Kolab Service password [gqQJmumuSEkm8mt]:
Confirm Kolab Service password:
Traceback (most recent call last):
  File "/usr/sbin/setup-kolab", line 42, in <module>
    setup.run()
  File "/usr/lib/python2.6/site-packages/pykolab/setup/__init__.py",
line 43, in run
    components.execute('_'.join(to_execute))
  File "/usr/lib/python2.6/site-packages/pykolab/setup/components.py",
line 170, in execute
    execute(component)
  File "/usr/lib/python2.6/site-packages/pykolab/setup/components.py",
line 202, in execute
    components[component_name]['function'](conf.cli_args, kw)
  File "/usr/lib/python2.6/site-packages/pykolab/setup/setup_mta.py",
line 320, in execute
    myaugeas.save()
  File "/usr/lib/python2.6/site-packages/augeas.py", line 385, in save
    raise IOError("Unable to save to file!")
IOError: Unable to save to file!
----------------------------------------

After that setup quits.
no setup.*.log files in /var/log/kolab/
I really don't know what would I do.
Any help will be appreciated.

Best Regards
Jan Burian