iMovie 10.1.6 can't switch YouTube accounts
Trying to share an iMovie 10.1.6 clip to YouTube for a non profit. To do so, I need to change the target YouTube account. In the past, I would click the account button (lower left corner on the share window with YouTube account name) and it would connect to Google in a new pop-up window and allow me to authenticate and to select which account to publish to.
Tonight, when I clicked the button, the pop-up window just had a strobing blank page. Anyone have this issue and solve it that can give suggestions?
Mac OS 10.11.6 El Capitan on mid 2012 Mac Pro.
Mac Pro, OS X 10.11