Error when try to open the Plug-In/Paket Manager

[wakecarter]

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Can't launch plugins/packages manager

I need to install pygame (among other plugins) but am unable to do so. PsychoPy seems to believe it is not connected to the internet and, perhaps helpfully, gives this error message: Traceback (most recent call last): File “C:\Program Files\PsychoPy\lib\site-packages\psychopy\app\coder\coder.py”, line 2870, in openPluginManager dlg = psychopy.app.plugin_manager.dialog.EnvironmentManagerDlg(self) File “C:\Program Files\PsychoPy\lib\site-packages\psychopy\app\plugin_manager\dialog.py”, line 50,…