Can't edit document in new version of Pages
I opened a previously created document in the new version of Pages (after upgrading to Mavericks) to edit it. I couldn't edit any of the text at all. I tried looking for possible reasons (group/ungroup, bring forward/send to back), with no luck.
Googled the problem and there were suggestions to click on the title bar, and then select "Unlock." Unfortunately, the box wasn't checked, so it wasn't locked. I clicked and unclicked, to be sure. Still no luck.
I have entire BODIES of documents I update frequently; some of them are 20+ pages. I am worried about opening any of them in the new version until I can sort this out.
Any ideas?
Pages-OTHER, Mac OS X (10.5.8)