This turned out to be due to a corrupted %APPDATA%\demeter\demeter.mru file. That file is used by A&A to populate the "Recently used" submenu under the File menu in each program. Somehow, Roberto's .mru file had become filled with lots of null characters. The part of Demeter that opens and reads the mru file got confused by the corrupted file. I have no ida how the corruption happened. If anyone else observes this, please report so that we can identify the cause and leave a searchable record here on the mailing list. Roberto was able to resolve the issue by deleting the .mru file. The only loss was the record of recently visited files. Note that this is the sort of problem that is impossible for me to diagnose without the log files, which Roberto happily included in his posting to the mailing list. So let this be a reminder of the importance of useful, actionable bug reports. http://bruceravel.github.io/demeter/pods/bugs.pod.html B On Wednesday, May 29, 2013 05:57:04 PM Rodriguez, Roberto wrote:

I'm currently having trouble opening both (D)Athena and (D)Artemis. When I first installed Demeter a couple months ago, the programs worked properly without any issue until recently. In both cases, the command prompt and the splash screen appear momentarily, disappears, and then nothing happens - the program never opens. To my knowledge, no settings have been changed that would prevent Athena/Artemis from opening. In contrast, (D)Hephaestus and (D)Atoms open and appear to function properly. I've tried uninstalling/reinstalling Demeter 0.9.13.1 in addition to installing the Updater 0.9.17, but I keep having the same issue. Any suggestions would be most helpful. Operating system is Windows 7 Enterprise.

Regards, Roberto

Roberto Rodriguez Development Engineer UOP LLC, A Honeywell Company 25 E Algonquin Rd., Des Plaines, IL 60017 Office: Bldg. 2, 350-B Office Phone: (847)391-2582 Cell: (815) 351-4481 Email: Roberto.Rodriguez@uop.commailto:Roberto.Rodriguez@uop.com

-- Bruce Ravel ------------------------------------ bravel@bnl.gov National Institute of Standards and Technology Synchrotron Methods Group at NSLS --- Beamlines U7A, X24A, X23A2 Building 535A Upton NY, 11973 Homepage: http://xafs.org/BruceRavel Software: https://github.com/bruceravel