Dear Bruce, I am having this strange problem since I used CC Cleaner to clean up my computer. (This may be coincidental.) [cid:image001.jpg@01CE466F.10C0D470] The following is the output of the dartemis.log file: Can't load 'C:/strawberry/perl/site/lib/auto/Wx/Wx.dll' for module Wx: load_file:The specified procedure could not be found at C:/strawberry/perl/lib/DynaLoader.pm line 200. at C:/strawberry/perl/site/lib/Wx/Perl/SplashFast.pm line 60 Compilation failed in require at C:\strawberry\perl\site\bin\dartemis.bat line 23. BEGIN failed--compilation aborted at C:\strawberry\perl\site\bin\dartemis.bat line 23. I have uninstalled and installed Demeter several times but the problem remains the same. This happened just when I needed to use Demeter the most. Thanks in advance, Amitava Roy J. Bennett Johnston, Sr., Center for Advanced Microstructures and Devices (CAMD) Louisiana State University, Baton Rouge, LA 70806