A few days ago I had an issue with a web site that required me to clear my history. As far as I can tell ever since then I have had an issue with the Evernote. When starting it up I get the top menu and NOTHING ELSE. I would try quitting and would observe the syncing notice. At some point I decided to try reloading a fresh version of the program from the app store. HOLY COW! That was an adventure. LOTS of errors and warnings! I eventually got the program to start, but got the same nonexistent screen.
By chance I learned that if I minimize the screen (that does not show!) I could then see it