Ah, please add the "--debug=433" switch to the dpkg call, and of course you need super user privileges to install packages, so use "sudo dpkg --debug=433 -i xul-ext-lightning-locale-pl_1.0~b5-0ubuntu0~malteworld4_all.deb".
Ah, please add the "--debug=433" switch to the dpkg call, and of course you need super user privileges to install packages, so use "sudo dpkg --debug=433 -i xul-ext- lightning- locale- pl_1.0~ b5-0ubuntu0~ malteworld4_ all.deb" .