Hi GrantW,
I haven’t figured it out yet, but now that you pointed it out to me it is obvious that the problem is in the permalink setup Even in the edit mode if I click on the permalink, as it is now, I go to that 400 error. Earlier, I played around with the permalink but then I thought I had reverted back to the default. Evidently not. Thanks for pointing me in the right direction. Like everything else it will likely take a couple of hours to crack.
Mel