This is still an issue for me on Xenial:
** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'gvim.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'display-im6.q16.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'gimp.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'org.gnome.Contacts.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'pidgin.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'org.gnome.font-viewer.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'chromium-browser.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'owncloud.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'gnome-system-monitor-kde.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'eog.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'fcitx.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'virtualbox.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'unity-appearance-panel.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'org.gnome.Calendar.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'software-properties-drivers.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'org.gnome.Books.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'ubuntu-mate-software.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'vim.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'libreoffice-draw.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'abiword.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'upstart-monitor.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'boinc-manager.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'tracker-preferences.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'comix.desktop': The component is invalid. ** (appstreamcli:1017): DEBUG: WARNING: Skipped component 'PlayOnLinux.desktop': The component is invalid.
(and many more lines)
This is still an issue for me on Xenial:
** (appstreamcli: 1017): DEBUG: WARNING: Skipped component 'gvim.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'display- im6.q16. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'gimp.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'org.gnome. Contacts. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'pidgin.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'org.gnome. font-viewer. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'chromium- browser. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'owncloud.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'gnome- system- monitor- kde.desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'eog.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'fcitx.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'virtualbox. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'unity- appearance- panel.desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'org.gnome. Calendar. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'software- properties- drivers. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'org.gnome. Books.desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'ubuntu- mate-software. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'vim.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'libreoffice- draw.desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'abiword.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'upstart- monitor. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'boinc- manager. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'tracker- preferences. desktop' : The component is invalid. 1017): DEBUG: WARNING: Skipped component 'comix.desktop': The component is invalid. 1017): DEBUG: WARNING: Skipped component 'PlayOnLinux. desktop' : The component is invalid.
** (appstreamcli:
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(and many more lines)