Well, it appears that Google has been aware of the issue with the "browse" button since last Friday and they don't seem to be able to get to the bottom of it. It's happening for "some people using Internet Explorer" and they suggest switching to Google Chrome or going to HTML editing. I'm going to try HTML, though I'm not very savvy with it.
And, not liking it at all!
Methinks I'll try downloading Chrome and see if I like that.