Profile and Offline IM both not working

Hello again,

I'm trying to make Profiles and Offline IMing to work but both come with error messages in the OpenSim log output.

[jOpenSimProfile]: Unable to connect to Profile Server 84.105.229.29/joomla2/components/com_opensim/interface.php . Method avatarpicksrequest, params System.Collections.Hashtable. Exception System.Xml.XmlException: Document element did not appear. Line 1, position 1.
at Mono.Xml2.XmlTextReader.Read () [0x00000] in <filename unknown>:0
at System.Xml.XmlTextReader.Read () [0x00000] in <filename unknown>:0
at Nwc.XmlRpc.XmlRpcResponseDeserializer.Deserialize (System.IO.TextReader xmlData) [0x00000] in <filename unknown>:0
at Nwc.XmlRpc.XmlRpcRequest.Send (System.String url, Int32 timeout) [0x00000] in <filename unknown>:0
at jOpenSim.Profile.jOpenProfile.OpenProfileModule.GenericXMLRPCRequest (System.Collections.Hashtable ReqParams, System.String method) [0x00000] in <filename unknown>:0

16:05:21 - [SynchronousRestObjectRequester]: Oops! no content found in response stream from POST 84.105.229.29/joomla2/components/com_ope...ace.php/SaveMessage/

And the debug setting of jOpenSim doesn't give any useful info either.
########## 18.08.2013 14:05:21 ##### response for unbekannt ##########
'
response for unknown method :

\'\''

So what am I missing? Did I forget something? I edited the config files as explained in the readme PDF file on this site.

Thanks in advance