[Wyndham]

I've just re-installed windows on a rebuilt PC, installed Calibre - then updated Calibre to latest version, and updated all plugins.

On starting Calibre I received a message advising that I need to install the Reader plugin, but when I did I got the following error:
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calibre, version 2.6.0
ERROR: Plug-in installation failed: A problem occurred while installing this plug-in. This plug-in will now be uninstalled. Please post the error message from the details below into the forum thread for this plug-in and restart Calibre.

Traceback (most recent call last):
File "site-packages\calibre\gui2\dialogs\plugin_updater.py", line 712, in _install_clicked
File "site-packages\calibre\customize\ui.py", line 383, in add_plugin
File "site-packages\calibre\customize\ui.py", line 550, in initialize_plugin
InvalidPlugin: Initialisation of plug-in Traceback (most recent call last):
File "site-packages\calibre\customize\ui.py", line 544, in initialize_plugin
File "calibre_plugins.ios_reader_apps.__init__", line 910, in initialize
File "calibre_plugins.ios_reader_apps.__init__", line 1239, in _get_connected_device_info
InitialConnectionError: Unable to connect to iDevice
failed with traceback:
Traceback (most recent call last):
File "site-packages\calibre\customize\ui.py", line 544, in initialize_plugin
File "calibre_plugins.ios_reader_apps.__init__", line 910, in initialize
File "calibre_plugins.ios_reader_apps.__init__", line 1239, in _get_connected_device_info
InitialConnectionError: Unable to connect to iDevice

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I tried again by opening Marvin on my iPad and running the Marvin Connector, and then installing the plugin, but obtained the same error.

Please note that I have had no problems in the past. Am I doing something wrong?