I've been having the same problem. Thank God I found Chris's solution. Using it, I was able to retrieve the note I had just tried to save using Evernote Helper. Unfortunately, I don't think any of the earlier notes I had made, and lost, using the Helper have reappeared. This problem is extremely annoying, and I hope a permanent fix will soon be worked out. I've been trusting all of my notes to Evernote for over a decade and, if I'm going to be paying for a subscription service, I need to know that it's as bulletproof as humanly possible.
