[famfam]

I could install the above polish dictionary in calibre hyphenation plugin. But when I tried to hyphenate a book I got a lookuperror: unknown encoding.

Look at this failur.log:
calibre 3.30 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.17134-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.17134')
Python 2.7.12+
Windows: ('10', '10.0.17134', 'SP0', u'Multiprocessor Free')
Interface language: de
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 9, 0) && DeDRM (6, 6, 0) && Package KFX (from KFX Input) (1, 9, 0) && Kindle Collections (1, 7, 21) && Count Pages (1, 8, 2) && Annotations (1, 8, 0) && EpubSplit (2, 5, 0) && Generate Cover (1, 5, 21) && DOC Input (1, 0, 1) && KFX metadata reader (from KFX Input) (1, 9, 0) && KFX Input (1, 9, 0) && Hyphenate This! (0, 0, 8) && Resize Cover (1, 0, 2) && BOL_DE (0, 7, 5) && EpubMerge (2, 4, 0)
Traceback (most recent call last):
File "calibre_plugins.hyphenatethis.hyphenatethisaction ", line 118, in hyphenate
File "calibre_plugins.hyphenatethis.hyphenatethisaction ", line 92, in _select_books
File "calibre_plugins.hyphenatethis.hyphenator.hyphenat or", line 165, in __init__
File "calibre_plugins.hyphenatethis.hyphenator.hyphenat or", line 89, in __init__
LookupError: unknown encoding:

Any idea whats going wrong here?