[Aetrus]

I'm at version 3.30, on Arch Linux and on every attempted startup I get the following error:

Traceback (most recent call last):
  File "/usr/bin/calibre", line 20, in <module>
    sys.exit(calibre())
  File "/usr/lib/calibre/calibre/gui_launch.py", line 74, in calibre
    main(args)
  File "/usr/lib/calibre/calibre/gui2/main.py", line 526, in main
    app, opts, args = init_qt(args)
  File "/usr/lib/calibre/calibre/gui2/main.py", line 112, in init_qt
    app = Application(args, override_program_name=override)
  File "/usr/lib/calibre/calibre/gui2/__init__.py", line 838, in __init__
    self.setup_styles(force_calibre_style)
  File "/usr/lib/calibre/calibre/gui2/__init__.py", line 941, in setup_styles
    self.load_calibre_style()
  File "/usr/lib/calibre/calibre/gui2/__init__.py", line 972, in load_calibre_style
    self.pi.load_style(icon_map)
AttributeError: 'NoneType' object has no attribute 'load_style'

I've seen older posts, where re-installing and updating to the newer versions has fixed it, and I've done both, with the error persisting.

Any ideas?