I have been unable to get either the eventShape or jetFinder working with JAS 2.2.1 and lcd.jar 1.2. Using the examples in the tutorial I get a messages about class cast exceptions or that I am not passing IHep3Vector or IHepLorentzVector. I am trying to read stdhep events, run FastMC, do jet finding etc. Does anyone have a simple example to do this (one in Mike Ronan's area is too sophisticated for me!). Thanks, Bob -- Robert J. Wilson Professor of Physics Department of Physics Colorado State University Fort Collins, CO 80523 Phone: (970) 491 5033 Fax: (970) 491 7947 Email: [log in to unmask] August 2000 - July 2001: ======================== Institut de Fisica d'Altes Energies Universitat Autonoma de Barcelona E-08193 Bellaterra (Barcelona) SPAIN Phone: (011 34) 93 581.28.32 Email: [log in to unmask] ========================