Hello! Thanks for trying out MEphemeris! Unfortunately, I am not the best one to diagnose your problems or suggest a solution. However, here are my (perhaps incorrect) thoughts: 1) MEphemeris requires Python XML functionality, so I don't think you have any choice except to install "python2.5-xml". I am not aware of a smaller/alternative library 2) I am puzzled that it 'used' to work for you, and now it does not. The suggests that you *did* (?) at one point have the necessary XML library, and it was removed from your system -- the behavior of MEphemeris should not change from one day to another, I think