Unpacking replacement wargus ... 
dpkg: error processing /var/cache/apt/archives/wargus_2.2.5.4-1maemo2~fremantle_armel.deb (--unpack): 
 error setting ownership of `./opt/stratagus/share/wargus/scripts/sound.lua': Operation not permitted 
dpkg-deb: subprocess paste killed by signal (Broken pipe) 
postinst called with unknown argument `abort-upgrade' 
dpkg: error while cleaning up: 
 subprocess post-installation script returned error exit status 1 
Errors were encountered while processing: 
 /var/cache/apt/archives/wargus_2.2.5.4-1maemo2~fremantle_armel.deb 
E: Sub-process /usr/bin/dpkg returned an error code (1)