After starting MS Word, the Aligned Elements Word Add-on/Plugin is visible, but it does not show the Navigation Bar or Project Explorer, only the Message View at the bottom of the pane:
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In order to fix this, select Main Menu => File => Options.
In the dialog, select the section called "General".
In the top most section called the "User Interface options", tick/select the check box for "Optimize for compatibility" to activate it.
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When completed, restart MS Word for the change to take effect.