[Ortep]

I feel like an idiot, but how do you use it?

I select an ebook/epub and then I click the button 'ebook' cleaner. Then the gui opens. But empty...when I try to open an ePub I get an error. (Different ones). An example"

calibre, version 0.8.7
ERROR: Unhandled exception: <b>KeyError</b>:u'MsoNormal'

Traceback (most recent call last):
  File "calibre_plugins.ebook_cleaner.main", line 1296, in slotOpenEpub
  File "calibre_plugins.ebook_cleaner.main", line 662, in feed
  File "lxml.etree.pyx", line 2942, in lxml.etree.parse (src/lxml/lxml.etree.c:54187)
  File "parser.pxi", line 1528, in lxml.etree._parseDocument (src/lxml/lxml.etree.c:79485)
  File "parser.pxi", line 1557, in lxml.etree._parseDocumentFromURL (src/lxml/lxml.etree.c:79768)
  File "parser.pxi", line 1457, in lxml.etree._parseDocFromFile (src/lxml/lxml.etree.c:78843)
  File "parser.pxi", line 997, in lxml.etree._BaseParser._parseDocFromFile (src/lxml/lxml.etree.c:75698)
  File "parsertarget.pxi", line 147, in lxml.etree._TargetParserContext._handleParseResultDoc (src/lxml/lxml.etree.c:86163)
  File "lxml.etree.pyx", line 282, in lxml.etree._ExceptionContext._raise_if_stored (src/lxml/lxml.etree.c:7972)
  File "saxparser.pxi", line 170, in lxml.etree._handleSaxStart (src/lxml/lxml.etree.c:81243)
  File "parsertarget.pxi", line 75, in lxml.etree._PythonSaxParserTarget._handleSaxStart (src/lxml/lxml.etree.c:85326)
  File "calibre_plugins.ebook_cleaner.main", line 736, in start
KeyError: u'MsoNormal'