Whenever you install new maps to your hard drive you need to tell Memory-Map to re-build the list of maps.

To do this simply click the Map button on the toolbar and then click the Refresh Map List button. Make sure the folder containing your maps (C:\Maps_v5 for OS V5 products) is listed in the white box and that the Search sub-folders box is ticked and then click OK.

You will be returned to the map list where all the maps found on your hard drive will be listed. To open a map double-click on it in the list.