[quast]

Thanks, quitting hardware acceleration worked with my manjaro linux, too.

Now calibre update from 6.11 to 6.14 was distributed. Since then the viewer does't start any more. Terminal shows this:

[quast@aspire ~]$ ebook-viewer
Traceback (most recent call last):
  File "/usr/bin/ebook-viewer", line 21, in <module>
    sys.exit(ebook_viewer())
  File "/usr/lib/calibre/calibre/gui_launch.py", line 102, in wrapper
    return func(*a, **kw)
  File "/usr/lib/calibre/calibre/gui_launch.py", line 118, in ebook_viewer
    main(args)
  File "/usr/lib/calibre/calibre/gui2/viewer/main.py", line 225, in main
    run_gui(app, opts, args, internal_book_data)
  File "/usr/lib/calibre/calibre/gui2/viewer/main.py", line 151, in run_gui
    main = EbookViewer(
  File "/usr/lib/calibre/calibre/gui2/viewer/ui.py", line 151, in __init__
    self.lookup_widget = w = Lookup(self)
  File "/usr/lib/calibre/calibre/gui2/viewer/lookup.py", line 307, in __init__
    self._page = Page(create_profile(), self.view)
  File "/usr/lib/calibre/calibre/gui2/viewer/lookup.py", line 223, in create_profile
    ans.setHttpUserAgent(random_user_agent(allow_ie=False))
  File "/usr/lib/calibre/calibre/__init__.py", line 297, in random_user_agent
    ua_list = common_user_agents()
  File "/usr/lib/calibre/calibre/utils/random_ua.py", line 26, in common_user_agents
    return user_agent_data()['common_user_agents']
  File "/usr/lib/calibre/calibre/utils/random_ua.py", line 14, in user_agent_data
    P('user-agent-data.json', data=True, allow_user_override=False))
  File "/usr/lib/calibre/calibre/utils/resources.py", line 89, in get_path
    with open(fpath, 'rb') as f:
FileNotFoundError: [Errno 2] Datei oder Verzeichnis nicht gefunden: '/usr/share/calibre/user-agent-data.json'

Any idea, how to fix it?
Thanks
Yours
quast