/usr/bin/calibre
Traceback (most recent call last):
  File "/usr/bin/calibre", line 20, in <module>
    sys.exit(main())
  File "/usr/lib/calibre/calibre/gui2/main.py", line 452, in main
    gui_debug=gui_debug)
  File "/usr/lib/calibre/calibre/gui2/main.py", line 317, in run_gui
    from calibre.gui2.wizard import wizard
  File "/usr/lib/calibre/calibre/gui2/wizard/__init__.py", line 30, in <module>
    from calibre.gui2.dialogs.progress import ProgressDialog
  File "/usr/lib/calibre/calibre/gui2/dialogs/progress.py", line 11, in <module>
    from calibre.gui2.progress_indicator import ProgressIndicator
  File "/usr/lib/calibre/calibre/gui2/progress_indicator/__init__.py", line 15, in <module>
    pi_error)
RuntimeError: Failed to load the Progress Indicator plugin: the sip module implements API v11.0 to v11.1 but the progress_indicator module requires API v10.1