I just used system restore > delete expedition registry keys..,because i was getting error messages trying to launch the program.

that worked fine for getting expedition to launch.., but i couldn't view my c-map 4d charts anymore

when i clicked on charts > cmap.., i could see that expedition knew i had them..., it just wouldn't display them

then, i logged on to my wifi, and that solved the problem - does expedition need to check in with c-map after a system restore?