How to install progs ?

After installing a few progs, I attempted to install...kdevelop !

After downloading seveal packages, auto-reboot :-(

When attempting to install again, I get an error message :
run dpkg --configure -a, but i fails also

When attempting to destroy the contents of /var/lib/dpkg/updates, it fails, because the files do not really exist (-???????? about rights).

How to get apt-get work again ?