so i think i figured out what the problem is:

first time I installed power pack I used Inception because I was running stock kernel

with Inception AEGIS_FIXED_ORIGIN seems to be "com.nokia.maemo/local"

now with open mode kernel it's only "com.nokia.maemo" which is obviously a less trusted source ...

EDIT:

installation works for me if I
export AEGIS_FIXED_ORIGIN=com.nokia.maemo/local

there you go...