Try this...

Go under the "Chart" tab and manually select the opposite card slot from the Lakemaster slot and see if it turns off the Lakemaster map and makes the unit use the internal Contour XD map...(without having to take the Lakemaster card out of the unit...)

You still would not be able to use the neat Lakemaster features on the Contour XD...but at least you should get any contours back that usually show on the internal Contour XD...

Post back if this works cause I'm kinda curious if it works this way also...

Rickie