OK ... this is what happens: some files are not available on the server JRC (IT), which is the one that provides the right files for the application, however in CGIAR-CSI (USA) the files are available but with 6001 cols/rows, which can not be loaded with the "Import srtm file'" menu. This is one case: srtm_23_17
There is another source of information suggested in a post ( http://www.viewfinderpanoramas.org/Cove ... s_org3.htm ), however the files have .hgt extension and I don't know how to convert them to .asc
Any suggestion? Thanks.