Dear Bruce, I have trouble running the Demeter 0.9.26_pre2 (64bit). When I start Artemis after installation of Demeter, it closes after showing nothing but the usual temple picture. Logfile is attached. The problem is analogous on both Win7 SP1 and Win8.1 and repeats also for Athena and Hephaestus. Could you please tell whether there is something I can do to fix it? Versions 0.9.25 and 0.9.24 start without problems. I know that 0.9.26 is a preview version, but I was installing it only to get the possibility to actually use the user-supplied value of epsilon_k for fitting multiple dataset. If it is difficult to make the version 0.9.26 available soon, maybe in 0.9.25 there is a possibility to set R-factor as a figure of merit for fitting rather than chi^2? That might also help. Thank you All the best, Kirill Lomachenko -- Dr. Kirill A. Lomachenko Scientist at BM23/ID24 beamlines European Synchrotron Radiation Facility (ESRF) 71 avenue des Martyrs CS 40220 38043 Grenoble Cedex 9, France Tel: +33 438 88 19 14 www.esrf.eu