Hi all, I came across another Demeter startup issue that seems different from the mingw and perl conflicts previously discussed, and I'm pretty stumped. System: Demeter 0.9.10 on Windows 7 32bit Issue: All Demeter apps (dathena.bat, dartemis.bat, etc.) will no longer run as a user. Apps will only run when opened as an administrator. Trying to open as a user causes cmd window and splash screen to pop up and instantly disappear. No "compatibility mode" seems to help. The problem seemed to pop up sometime between August 2 and August 8, after upgrading to 0.9.10, but I downgraded to 0.9.0 and the problem persisted, so (likely) something changed in my Windows environment and not Bruce's software. The log: Can't load 'C:/strawberry/perl/site/lib/ auto/Ifeffit/Ifeffit.dll' for module Ifeffit: load_file:Invalid access to memory location at C:/strawberry/perl/lib/DynaLoader.pm line 200. at C:/strawberry/perl/site/lib/Demeter.pm line 36 Compilation failed in require at C:/strawberry/perl/site/lib/Demeter.pm line 36. BEGIN failed--compilation aborted at C:/strawberry/perl/site/lib/Demeter.pm line 36. Compilation failed in require at C:/strawberry/perl/site/lib/Demeter/UI/Athena.pm line 5. BEGIN failed--compilation aborted at C:/strawberry/perl/site/lib/Demeter/UI/Athena.pm line 5. Compilation failed in require at C:\strawberry\perl\site\bin\dathena.bat line 25. BEGIN failed--compilation aborted at C:\strawberry\perl\site\bin\dathena.bat line 25. I exchanged a few Emails with Bruce before realizing this is a bit more complex than I thought. We've thus figured out (I think) - Explicitly giving myself full permissions to C:/strawberry/perl/site/lib/auto/Ifeffit/ and %APPDATA%/demeter has no effect. - Although I have a cygwin version of perl, demeter is calling up the right one each time. Invoking perl with the full path in e.g. dathena.bat has no effect. I suspect the problem might not be in perl or any of Bruce's code, but in some behavior of ifeffit that was previously condoned by Windows but now requires elevated permissions. I understand ifeffit is written in fortran90 but I don't know if there's any aspect of it that might be affected by recent MS Visual C++ updates I've done on my laptop. (MS Visual C++ 2008 x86 9.0.30729.17 and MS Visual C++ 2010 x86 10.0.30319). I'm pretty sure MSVC2008 coincides with the time Demeter stopped working but it could just be a coincidence. There are also of course various security updates I can't easily sort through. I was hoping Matt might be able to point me in the right direction here; I don't know the inner workings of IFEFFIT and I might be far off track already. Thanks, Jason