Dear all. I am using ubuntu 11.04 ros electric to test the demo of record and upload object to roboearth. Everything is fine, only when I upload the model to roboearth. from the terminal recomm, I got the following information: administrator@ubuntu:~$ rosrun recomm run [ INFO] [1340194347.185701775]: Module 'ObjectHandler' loaded. [ INFO] [1340194347.275529766]: Module 'BinaryFileHandler' loaded. [ INFO] [1340194347.317441292]: Module 'ActionRecipeHandler' loaded. [ INFO] [1340194347.361242746]: Module 'EnvironmentHandler' loaded. [ INFO] [1340194347.371722059]: Module 'MapExtractorHandler' loaded. log4j:WARN No appenders could be found for logger (org.apache.http.impl.conn.SingleClientConnManager). log4j:WARN Please initialize the log4j system properly. [ INFO] [1340194523.951910769]: GetObject (UID: OfficeToole.MyBox): Failed

upload object 'OfficeToole.MyBox': upload object file '2dcammodel.zip' (uid 'OfficeToole.MyBox') [7466KiB]:

upload object file 'kinectmodel.zip' (uid 'OfficeToole.MyBox') [16364KiB]:

upload object file 'preview.png' (uid 'OfficeToole.MyBox') [11KiB]: [ INFO] [1340194571.669145830]: SetObject (UID: OfficeToole.MyBox): Done

How to solve the problem for log4j??