Map Magic is an add on to ArcView GIS 3.x and Intersection Magic 6.x. All Arcview GIS 3.x versions have a problem with Windows XP that affects operation with Map Magic. We’ve experienced “Segment Violation” messages; we’ve heard of “Can not convert string to number” error messages.
ArcView GIS v3.x requires a patch to function properly in Windows XP.
The malfunction is related to use of DDE for inter-program communication.
ESRI has made a patch available that must be installed on ArcView 3.x installations under Windows XP.
When this article was written, the patch could be found at:
If the above link does not work, go to the esri / support / downloads pages and look for patches to ArcView 3.x – there is one called Windows XP Patch.