I just installed antergos today and when I launched Music nothing happended. So I typed gnome-music in the terminal and this came out.
** (gnome-music:4548): WARNING **: Couldn't register with accessibility bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. /usr/lib/python3.4/site-packages/gnomemusic/grilo.py:94: Warning: The property SoupSession:ssl-ca-file is deprecated and shouldn't be used anymore. It will be removed in a future version. self.registry.load_all_plugins() Segmentation fault (core dumped)