I renamed the directories and started modrana, but still grey screen. Tried downloading tiles, which completed, but I noticed that the only new directory that was written under .maps is monav_data. There is no new OpenSteetMap I or II folders. Modrana is not writting new folders and saving the tiles. Changed to Google maps and still nothing. ) @malfunctioning Yes, I connect to internet then start Modrana and wait till I get a GPS lock before doing anything. I tried Marble and again, it works well. It wrote a new OpenStreetMap I folder and saved new tiles under 16 folder. It seems something is wrong in Modrana. I thought I would mention this before I reinstall the application as suggested. Thanks to all for your help so far. Sunil