The Basemap Vanished on Certain Zoom Level

Hi!

I had trouble viewing map on Basecamp. I compiled and install maps using GMapTool. If I select 1 mapset, the basemap disappear. Please check attached images.

China Map contains CN and DEM







Indonesia Map contains CN, Topo, and DEM








But no problem on zooming for this Japan OSM map (which I downloaded from a link in this forum.) The downloaded zip files contains 2 IMG files. "gmapsupp.img" and "gmapsupp search.img" then I combine those maps using GMapTool into 1 IMG files. Load into USB drive and fire up Basecamp.








All maps are set to Transparent using GMapTool and the rest are:



Thanks!