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When I start AppCenter in GUI, an icon appears in the dock, and after a few seconds it silently crashes, without showing anything. When I start it from terminal, I get the following output:

[ERROR 13:25:43.613069] Client.vala:65: Metadata files have errors: /var/lib/app-info/yaml/security.ubuntu.com_ubuntu_dists_xenial-security_multiverse_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/security.ubuntu.com_ubuntu_dists_xenial-security_universe_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/security.ubuntu.com_ubuntu_dists_xenial-security_restricted_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial-backports_multiverse_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial-backports_universe_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial-backports_restricted_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial-backports_main_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial-updates_multiverse_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial-updates_universe_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial-updates_restricted_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial-updates_main_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial_multiverse_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial_universe_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial_restricted_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/uz.archive.ubuntu.com_ubuntu_dists_xenial_main_dep11_Components-amd64.yml.gz, /var/lib/app-info/yaml/security.ubuntu.com_ubuntu_dists_xenial-security_main_dep11_Components-amd64.yml.gz Trace/breakpoint trap (core dumped)

I've already tried suggested answer here. I'm not sure when the problem appeared. Still I can install packages via terminal without any problems.

I have the following ppa's (excluding elementary) in my sources.list.d:

#MYSQL
deb http://repo.mysql.com/apt/ubuntu/ xenial mysql-apt-config
deb http://repo.mysql.com/apt/ubuntu/ xenial mysql-5.7
deb http://repo.mysql.com/apt/ubuntu/ xenial mysql-tools
deb-src http://repo.mysql.com/apt/ubuntu/ xenial mysql-5.7
#WINE
deb http://ppa.launchpad.net/wine/wine-builds/ubuntu/ xenial main 
#ROS
deb http://packages.ros.org/ros/ubuntu xenial main
#ELEMENTARY TWEAKS
deb http://ppa.launchpad.net/philip.scott/elementary-tweaks/ubuntu/ xenial main

The content of sources.list was never changed, but here's the short version (without commented lines):

deb http://uz.archive.ubuntu.com/ubuntu/ xenial main restricted 
deb http://uz.archive.ubuntu.com/ubuntu/ xenial-updates main restricted 
deb http://uz.archive.ubuntu.com/ubuntu/ xenial universe 
deb http://uz.archive.ubuntu.com/ubuntu/ xenial-updates universe 

deb http://uz.archive.ubuntu.com/ubuntu/ xenial multiverse 
deb http://uz.archive.ubuntu.com/ubuntu/ xenial-updates multiverse 

deb http://uz.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse 

deb http://security.ubuntu.com/ubuntu/ xenial-security main restricted 
deb http://security.ubuntu.com/ubuntu/ xenial-security universe 
deb http://security.ubuntu.com/ubuntu/ xenial-security multiverse
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2
  • aptitude doesn't exist as a command on my elementary terminal...why?
    – AntonioDallOlio
    Jul 6, 2017 at 17:23
  • @Antonio You can use apt instead, I think there will be no difference. Just type apt instead of aptitude. Aptitude was what I used. It is a 3rd party tool so you have to install it by yourself. sudo apt install aptitude
    – Orif Khodjaev
    Jul 7, 2017 at 3:40

1 Answer 1

Reset to default
2

I made 

sudo aptitude purge appstream
sudo apt install appcenter

Solved the problem. But maybe simply deleting files in /var/lib/app-info/yaml/ would solve the problem too, I don't know.

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