I uninstalled mapper 1.4.7-3 and then installed 1.4.7-2. (https://garage.maemo.org/frs/downloa...7-2_armel.deb). 1.4.7-2 is working fine wothout crash.

Just one more thing. http://eko.one.pl/index.php?page=Nokia770_software page shows that mapper can show different icons for different categories. I made icons 32x32 (jpeg as well bmp) and copied into directory as specified, but I still do not see icons. All I see is purple square icon. It will be a fun thing. But I can live without it. Mapper overall is excellent tool.