I had a major blog publishing malfunction last night. I don't know the technical details, but my understanding is that Blogger fainted for a moment while adding last evening's post. The result was that my blog template was corrupted.
I believe that the easiest solution is to re-select a template and re-publish in toto. I thought it might be a good excuse to try a new look. Or two. What you see now may not be what you see tomorrow.
I will have to re-add various links and widgets to the sidebar after I make a final template choice.
I was momentarily annoyed. However, this is the first major problem I've had with Blogger in nearly two years of blogging. And Blooger is, after all, a free service.