/home/user/MyDocs/Documents # dpkg -i /home/user/MyDocs/Debs/n9-qtweak-6.3_all.deb 
file /var/lib/dpkg/tmp.ci/digsigsums cannot be opened
No digsigsums file
(Reading database ... 57424 files and directories currently installed.)
Preparing to replace n9-qtweak 6.1 (using .../Debs/n9-qtweak-6.3_all.deb) ...
Package n9-qtweak: File '/var/lib/dpkg/info/n9-qtweak.postinst' not in digsigsums -- warning
Unpacking replacement n9-qtweak ...
dpkg: error processing /home/user/MyDocs/Debs/n9-qtweak-6.3_all.deb (--install):
 error setting permissions of `./home/user/MyDocs/Documents/N9_QuickTweak_ru_v6.3.pdf': Operation not permitted
dpkg-deb (subprocess): data: internal gzip write error: Broken pipe
dpkg-deb (subprocess): failed in write on buffer copy for failed to write to pipe in copy: Broken pipe
dpkg-deb: subprocess <decompress> returned error exit status 2
Errors were encountered while processing:
 /home/user/MyDocs/Debs/n9-qtweak-6.3_all.deb
aegis-installing n9-qtweak (from '')