Xesame- Unknownhost Exception

Hi,

I dowloaded XESame along with PROM6. When I try up open the mapping file provided in XESame example, I get  java.net.Unknownhostexception code.fluxicon.com. The eeror long in the consol as follows

2010-12-13 17:25:30: (ERROR) We could not parse the extension at the URI 'http://code.fluxicon.com/xes/concept.xesext' because of the following error: code.fluxicon.com
2010-12-13 17:25:30: (ERROR) We could not load the mapping as specified in the saved mapping due to the following error: code.fluxicon.com
2010-12-13 17:26:41: (PROGRESS) Starting step 1 of 5: initialization.
2010-12-13 17:26:49: (PROGRESS) Starting step 2 of 5: Extracting log info.
2010-12-13 17:26:50: (PROGRESS) Starting step 3 of 5: Extracting traces.
2010-12-13 17:26:50: (PROGRESS) Starting step 4 of 5: Extracting Event: Generated Event.
2010-12-13 17:26:51: (PROGRESS) Starting step 5 of 5: Converting Cache DB to XES.
2010-12-13 17:27:06: (ERROR) We could not write the event log file because we encountered an error when parsing a stored extension (Concept):code.fluxicon.com
2010-12-13 17:27:19: (PROGRESS) We stopped execution because of a critical error.

Please let me know what needs to be done.