Sphinx Exception when trying to execute documentation

Hi

I am very new to sphinx so I have most likely done something wrong. However when I try to run my configuration to document my code I get the following error:

Traceback (most recent call last):
  File "C:\Program Files (x86)\JetBrains\PyCharm Community Edition 4.5.3\helpers\rest_runners\sphinx_runner.py", line 5, in <module>
    from sphinx import cmdline
  File "C:\python34\lib\site-packages\sphinx\cmdline.py", line 23, in <module>
    from sphinx.application import Sphinx
  File "C:\python34\lib\site-packages\sphinx\application.py", line 37, in <module>
    from sphinx.builders import BUILTIN_BUILDERS
  File "C:\python34\lib\site-packages\sphinx\builders\__init__.py", line 23, in <module>
    from sphinx.util import i18n, path_stabilize
  File "C:\python34\lib\site-packages\sphinx\util\i18n.py", line 15, in <module>
    from babel.messages.pofile import read_po
  File "C:\python34\lib\site-packages\babel\messages\__init__.py", line 12, in <module>
    from babel.messages.catalog import *
  File "C:\python34\lib\site-packages\babel\messages\catalog.py", line 23, in <module>
    from babel.dates import format_datetime
  File "C:\python34\lib\site-packages\babel\dates.py", line 28, in <module>
    from babel.util import UTC, LOCALTZ
  File "C:\python34\lib\site-packages\babel\util.py", line 278, in <module>
    from babel import localtime
  File "C:\python34\lib\site-packages\babel\localtime\__init__.py", line 21, in <module>
    from babel.localtime._win32 import _get_localzone
  File "C:\python34\lib\site-packages\babel\localtime\_win32.py", line 18, in <module>
    tz_names = get_global('windows_zone_mapping')
  File "C:\python34\lib\site-packages\babel\core.py", line 58, in get_global
    _global_data = pickle.load(fileobj)
TypeError: an integer is required (got type str)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Program Files (x86)\JetBrains\PyCharm Community Edition 4.5.3\helpers\rest_runners\sphinx_runner.py", line 7, in <module>
    raise NameError("Cannot find sphinx in selected interpreter.")
NameError: Cannot find sphinx in selected interpreter.

Process finished with exit code 1


My current setup is.

Project folder structure.

app/ - Where my python main application is
plugins/plugin_name/version/ - Where stand alone python classes are which can be imported as plugins in the main application

sphinx/doc/source/ - Sphinx source folder generated by quick start.
sphinx/doc/build/ - Sphinx build folder generated by quick start.

My run configuration in PyCharm is created under Python docs.
Command = html
input   = sphinx/doc/source/
output  = sphinx/doc/build/

I am using Python 3.4.3

Regards
Anders