Latest Update App Won't Open

When I tried to start the app, the Menu Bar icon shows up grayed out. If I click that, there is a message that it is starting, and a little graphic that goes on for a long time. While this is happening, any attempt to move a file from one folder to another anywhere on my computer (Not just in or out of Dropbox, mind you! Between any two places on my hard drive, including putting things in trash...) takes forever. 

Eventually I will get an error message from the App that it failed.

 If I quit the app and log out of my Mac User account and log back in, my computer starts working fine again. So I deleted the Dropbox App, waiting to get an answer.

Now, here's the crazy thing- With the Dropbox App deleted, I can put files in the Dropbox app on my computer and they sync to Dropbox. And if I put files in my Dropbox from another computer they sync to the computer with the Dropbox issue.

I can see two Dropbox Processes running still in Activity Monitor, so regardless of what Dropbox says, deleting the app doesn't totally remove Dropbox from your computer. And whatever is left is doing what I need.

So at this point I'm kind of done messing with it. If Dropbox does an update to fix the issue I'll check it out, but this has already killed several hours for me, and made me question why I am paying for a service that has zero support unless you are an enterprise user. My time would be better spent looking for alternatives that support their paying customers.