Nico,
Thanks so much for responding to my post. I went back in this morning and unpublished all plugins and the problem was corrected. I then had the ability to add, edit, etc in the dashboard and on the frontend. I then started publishing all the plugins one at a time but the problem did not occur again. There was no conflict with any!
Not sure why but it righted itself by un-publishing all then publishing! Very strange!
Thanks!