I followed PinkElephant advice, which resolved the problem - but only temporarily.
I find that I often have to restart my Safari browser before Evernote web will start.
My frustration with slow startup of Evernote has been growing, to the point that I am actively exploring alternatives.
And the recent purchase of Evernote by an unknown company (to me) raises questions about the products future.
I don't know where this will lead. And I have 10 years of data in E'Note.