There is a config.xml file placed into the directory the EXE runs, perhaps removing that might help the picture?
if this still doesnt provide any light, you maybe able to use process monitor from sysinternals to log the output of whats happening, so after a reboot the log file may have the answer as to what was happening at the time of your system lockup (perhaps trying to access something it doesnt like).
Another potential source of information would be your systems Event Viewer, found under Administrative Tools in the Control Panel. Specifically look at Application and System log, however on a freeze its quite probably it doesnt log the information (You could get lucky, I have in the past)