Zenoss XML-RPC API

I have a problem with the XML-RPC API of Zenoss.

I created a python script based on this guide, which adds devices automatically to Zenoss:
http://community.zenoss.org/docs/DOC-3805

It works, but I still have two issues:

1.)
Whenever a device gets added to Zenoss the response contains the log entries of zendisc.
Obviously the xml parser expects a xml response, so it fails with an exception, which causes my whole script to fail.

\n 2014-11-05 11:53:21 INFO zen.ZenDisc Connecting to localhost:8789 \n \n\n 2014-11-05 11:53:21 INFO zen.ZenDisc Connected to ZenHub \n \n\n 2014-11-05 11:53:21 INFO zen.ZenDisc Looking for 192.168.0.20 \n \n\n 2014-11-05 11:53:21 INFO zen.ZenDisc Result: Discovered device 192.168.0.20. \n \n\n 2014-11-05 11:53:21 INFO zen.ZenDisc skipping WMI-based collection, PySamba zenpack not installed \n \n\n 2014-11-05 11:53:21 INFO zen.ZenDisc No Python plugins found for 192.168.0.20 \n \n\n 2014-11-05 11:53:21 INFO zen.ZenDisc No command plugins found for 192.168.0.20 \n \n\n 2014-11-05 11:53:21 INFO zen.ZenDisc SNMP collection device 192.168.0.20 \n \n\n 2014-11-05 11:53:21 INFO zen.ZenDisc plugins: zenoss.snmp.DeviceMap, zenoss.snmp.NewDeviceMap, zenoss.snmp.InterfaceMap, zenoss.snmp.IpServiceMap, zenoss.snmp.IpV6ServiceMap

2.)
The xml parser can't decode the response from Zenoss.
I always get a "ResponseError" exception from xmlrpclib.

\n\n\n\n1\n\n\n\n

This is most likely a problem of the xml parser, or it might be an encoding issue.

Hope someone can help me.

Thanks.