He he he .....
Creative Commons License photo credit: Matthew Fang

UPDATE: there’s a temporary workaround for this problem suggested by cgpsmapper’s author, please read his comment below.

Looks like the latest 0098 version of cGPSmapper (more precisely its cpreview.exe) has a bug: cpreview breaks down when generating GroundTruth preview maps. I’ve reported the bug to cGPSmapper’s author, hopefully it will be fixed soon. In the meantime, I recommend using the previous version of cGPSmapper…

BTW: you can still generate main IMG files – the process breaks down after that. But you won’t be able to import maps into MapSource (well not automatically, anyway).