Most likely most of the problem comes when you incept your packages, since then there is system conflict with com.nokia.maemo vs com.nokia.maemo/local origins. Thats why openmode AEGIS_FIXED_ORIGIN=com.nokia.maemo works as it doesnt conflict the packages.

Ofcourse you can use that origin also in secure mode, as long as you _dont_ use the default inception to do it .