I had to deactivate the plugin after I upgraded to 3.7. Every post I tried to open, whether it had been written previously in the earlier Gutenberg version or in classic editor was returning this error:

"The editor has encountered an unexpected error."

You're given three options: "Attempt Recovery," "Copy Post Text" and "Copy Error."

None of them does a thing. You can't get to your post.

Version 3.7 is NOT ready for prime time.