qgis - OpenLayers-plugin error after installing update

After installing an update for the OpenLayers-plugin today, this plugin does not work any longer. Reinstalling did not function neither with QGIS 2.12.0-Lyon nor with QGIS 2.14.1 ESSEN. Following error message occurred:

"Konnte Erweiterung openlayers_plugin nicht laden aufgrund eines Fehlers beim Aufruf der initGui() Methode 

UnicodeEncodeError: 'ascii' codec can't encode character u'\xdc' in position 11: ordinal not in range(128) 
Traceback (most recent call last):
  File "C:/PROGRA~1/QGISLY~1/apps/qgis/./python\qgis\utils.py", line 315, in startPlugin
    plugins[packageName].initGui()
  File "C:/Users/Stalze/.qgis2/python/plugins\openlayers_plugin\openlayers_plugin.py", line 115, in initGui
    print action.text()
UnicodeEncodeError: 'ascii' codec can't encode character u'\xdc' in position 11: ordinal not in range(128)



Python-Version: 2.7.5 (default, May 15 2013, 22:44:16) [MSC v.1500 64 bit (AMD64)] 
QGIS-Version: 2.12.0-Lyon Lyon, cd9d645 

Python-Pfad:
C:/Users/Stalze/.qgis2/python/plugins\processing
C:/PROGRA~1/QGISLY~1/apps/qgis/./python
C:/Users/Stalze/.qgis2/python
C:/Users/Stalze/.qgis2/python/plugins
C:/PROGRA~1/QGISLY~1/apps/qgis/./python/plugins

C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\matplotlib-1.3.1-py2.7-win-amd64.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\nose-1.3.3-py2.7.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\tornado-4.0.1-py2.7-win-amd64.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\backports.ssl_match_hostname-3.4.0.2-py2.7.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\certifi-14.05.14-py2.7.egg
c:\osgeo4~1\apps\python27\lib\site-packages\python_dateutil-2.1-py2.7.egg
c:\osgeo4~1\apps\python27\lib\site-packages\six-1.3.0-py2.7.egg
C:\PROGRA~1\QGISLY~1\bin\python27.zip
C:\PROGRA~1\QGISLY~1\apps\Python27\DLLs
C:\PROGRA~1\QGISLY~1\apps\Python27\lib

C:\PROGRA~1\QGISLY~1\apps\Python27\lib\plat-win
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\lib-tk
C:\PROGRA~1\QGISLY~1\bin
C:\PROGRA~1\QGISLY~1\apps\Python27
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\PIL
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\jinja2-2.7.2-py2.7.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\markupsafe-0.23-py2.7-win-amd64.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\pytz-2012j-py2.7.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\win32

C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\win32\lib
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\Pythonwin
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\Shapely-1.2.18-py2.7-win-amd64.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\six-1.3.0-py2.7.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\wx-2.8-msw-unicode
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\xlrd-0.9.2-py2.7.egg
C:\PROGRA~1\QGISLY~1\apps\Python27\lib\site-packages\xlwt-0.7.5-py2.7.egg
C:/Users/Stalze/.qgis2//python
C:\Users\Stalze\.qgis2\python\plugins\DigitizingTools\tools
C:\Users\Stalze\.qgis2\python\plugins\mmqgis/forms

C:\Users\Stalze\.qgis2\python\plugins\SelectTools/tools
C:/Users/Stalze/.qgis2/python/plugins\shpsync\xlrd-0.9.4-py2.7.egg
C:/Users/Stalze/.qgis2/python/plugins\shpsync\xlwt-1.0.0-py2.7.egg
.
C:\PROGRA~1\QGISLY~1\apps\qgis\python\plugins\fTools\tools"

As I work with the Bing aerial layer quite often, what could I do to make this plugin run again?