As directed by 'kernelpanic' I installed the Roadmap in MMC2. Also did unzip the basemap and usOH maps into roadmaps dir on MMC2. (According to developer, it can be installed either in MMC1 or MMC2.) For a moment it worked (was able to open the application, didn't do anything else). On second attempt, it is opening and getting closed immediately. Requested help from Charles (Roadmap owner/creator) on garage forums page for roadmap. But RoadGPS (to establish GPS connectivity to Roadmap) application is working fine, locating sattellites etc.