Calibre 3.1.1 wont open

[Alun Hughes]

There was an error during Calibre Startup. Applies to Calibre 64bit and 32 bit for Windows.

Details
Traceback (most recent call last):
  File "site-packages\calibre\gui2\main.py", line 292, in initialize_db_stage2
  File "site-packages\calibre\gui2\main.py", line 232, in start_gui
  File "site-packages\calibre\gui2\ui.py", line 250, in initialize
  File "site-packages\calibre\gui2\layout.py", line 330, in init_main_window_mixin
  File "site-packages\calibre\gui2\actions\fetch_news.py", line 32, in init_scheduler
  File "site-packages\calibre\gui2\dialogs\scheduler.py", line 587, in __init__
  File "site-packages\calibre\web\feeds\recipes\model.py", line 148, in __init__
  File "site-packages\calibre\web\feeds\recipes\collection.py", line 103, in get_builtin_recipe_collection
  File "src/lxml/lxml.etree.pyx", line 3442, in lxml.etree.parse (src\lxml\lxml.etree.c:81716)
  File "src/lxml/parser.pxi", line 1811, in lxml.etree._parseDocument (src\lxml\lxml.etree.c:118635)
  File "src/lxml/parser.pxi", line 1837, in lxml.etree._parseDocumentFromURL (src\lxml\lxml.etree.c:118982)
  File "src/lxml/parser.pxi", line 1741, in lxml.etree._parseDocFromFile (src\lxml\lxml.etree.c:117894)
  File "src/lxml/parser.pxi", line 1138, in lxml.etree._BaseParser._parseDocFromFile (src\lxml\lxml.etree.c:112440)
  File "src/lxml/parser.pxi", line 595, in lxml.etree._ParserContext._handleParseResultDoc (src\lxml\lxml.etree.c:105896)
  File "src/lxml/parser.pxi", line 706, in lxml.etree._handleParseResult (src\lxml\lxml.etree.c:107604)
  File "src/lxml/parser.pxi", line 646, in lxml.etree._raiseParseError (src\lxml\lxml.etree.c:106750)
XMLSyntaxError: None (builtin_recipes.xml, line 0)

[Kovid Goyal (kovid)]

This is caused by the third party iOS Reader plugin. You can fix it by following the steps:

    1. Uninstall the iOS reader plugin by opening a command prompt and typing the following in and then pressing Enter:

       calibre-customize.exe --remove-plugin "iOS reader applications"

    2. Then do the same for the Marvin XD plugin:

       calibre-customize.exe --remove-plugin "Marvin XD"

In the next calibre release, this plugin will be blacklisted so calibre
does not load it.

Note that if you are on a Mac, instead of using "calibre-customize.exe", use
/Applications/calibre.app/Contents/MacOS/calibre-customize

On Linux, use "calibre-customize" instead of "calibre-customize.exe"

 status fixreleased