I can't open "Software & Updates" tool

Project:Trisquel
Version:8.0
Component:Programs
Category:bug report
Priority:normal
Assigned:Unassigned
Status:active
Description

Trisquel 8 for amd64

Wed, 02/08/2017 - 01:59

Command add-apt-repository is missing as well.
Both issues must be related to the missing package software-properties which is not available in the repos.

Mon, 05/01/2017 - 00:08

It is already fixed in new version.