So tonight I went in to edit several of my posts.
When I open up a post, and try to edit some text or add a class to an image, and then click Save - NOTHING happens. The changes don't stick and it reverts back to the un-edited version.
I have never had this problem before - but just tried it with multiple posts and it does the same thing each time.
I can write new posts with no problem. I just can't edit them.