Anyone experience with the Shinken "npcdmomd" module?

https://github.com/shinken-monitoring/mod-npcdmod

I exactly followed this guide:

http://shinken.readthedocs.io/en/lat...ation/pnp.html

Unfortunately, the module doesn't create any perfdata files in the defined directory. The web interface http://hostname/pnp4nagios returns the error below.

perfdata directory "/usr/local/pnp4nagios/var/perfdata/" is empty. Please check your Nagios config. Read FAQ online

The npcd service on my Shinken server is started and logs in debug mode gives me the info below.

[08-19-2016 19:46:58] NPCD: No more files to process... waiting for 15 seconds
[08-19-2016 19:47:13] NPCD: Found 2 files in /usr/local/pnp4nagios/var/spool
[08-19-2016 19:47:13] NPCD: ThreadCounter 0/5 File is .
[08-19-2016 19:47:13] NPCD: ThreadCounter 0/5 File is ..
[08-19-2016 19:47:13] NPCD: No more files to process... waiting for 15 seconds

A host config:

define host{
use ssh,http,check_load,imap,pop3,smtp,linux-snmp,linux
contact_groups admins
host_name hostname.example.org
address hostname.example.org
process_perf_data 1
}

And the output of /etc/shinken/services/services.cfg:

define servcie{
process_perf_data 1
}

Can anyone help me further? Thanks in advace!