[MrKonan]

Hi, I've just updated to latest release and seeing an error message. (Preferences -> Conversion -> Common Options).



calibre, version 3.9.0
ERROR: Unhandled exception: <b>AttributeError</b>:'OptionRecommendation' object has no attribute 'expandtabs'

calibre 3.9 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.15063-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.15063')
Python 2.7.12+
Windows: ('10', '10.0.15063', 'SP0', u'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: EpubMerge (2, 1, 1) && Manage Series (1, 2, 8) && EpubSplit (2, 2, 1) && FanFicFare (2, 17, 4)
Traceback (most recent call last):
File "site-packages\calibre\gui2\preferences\main.py", line 308, in show_plugin
File "site-packages\calibre\gui2\preferences\conversion.py", line 98, in genesis
File "site-packages\calibre\gui2\preferences\conversion.py", line 95, in widget_factory
File "site-packages\calibre\gui2\convert\look_and_feel.py", line 55, in __init__
File "site-packages\calibre\gui2\convert\__init__.py", line 94, in initialize_options
File "site-packages\calibre\gui2\convert\__init__.py", line 268, in setup_help
File "site-packages\calibre\gui2\convert\__init__.py", line 272, in setup_widget_help
File "textwrap.py", line 325, in wrap
File "textwrap.py", line 154, in _munge_whitespace
AttributeError: 'OptionRecommendation' object has no attribute 'expandtabs'