I have created a little raw/draft/first take video showing what "Break on exception" can do for you in the debugger, and what "Go to position on clipboard" can do for you on "post mortem" exception dumps.
Exception dumps gives valuable information about exceptions.
See the video: Dump Demo - Visual Prolog 7.3 - IDE demonstration; HD and full screen may be necessary to get the details (hope your Internet connection allows that).
Share Tips, Code Samples, etc. with the Visual Prolog community.
Regards Thomas Linder Puls