Christopher,
The problem that you reported (hostname einstein.aei.mpg.de not found) indicates a networking problem on your machine which caused the workunits to fail, since the input data could not be downloaded.
Open a command-line window and try 'ping einstein.aei.mpg.de'. If this command doesn't work, you have a networking problem and need to fix it. If it does work, the problem you experienced should not recurr.
Bruce
