Some iBooks author files will not open in Pages, tried multiple ways to open the file but each time I get a dialogue box that says Pages can not open.
As Apple did not recreate all of the iBooks Author functionality in Pages 10.1, here is there article, Import your iBooks Author book into Pages for Mac, that discusses how it will handle some unsupported content.
I have the same problem!
I must delete all de pages in the iBook with hyperlinks, and the conclusion is that the last version of Pages doesn't have the all functionality of iBook Author. For example Pages can't use glossary, and many widgets. In this momento I don't recommend the importation, is better iBook Author.
Did you update to the latest Pages?
Yes, updated, restarted iMac. Still unable to import the IBA files.
You said "some" do not import. Are there some that do import? If yes, any difference between the two sorts?
Apple never promised anyone that Pages 10.1 would have all of the iBooks Author functionality, and only the most naive would expect the entire application to be integrated into Pages.
importing iBooks author in pages
