corrupt

Same issue with MBA on 10.10.1.

This works. Thank you!

You rock man, thanks 🙂!

Additionally removing all notes/highlights fixes the issue. You can still select all and copy/paste all notes and recreate them later.

I am having the same issue. Any new book downloaded to my mac book pro opens as "corrupt."

I tried the work around switching to another app, it allows you to open the book but it doesn't have most of the content.

Is the solution that Yosemite needs to be reinstalled?

Any other solution to allow new books to be downloaded?

I noticed the same behavior.
Right after downloading, if the book is opened, iBook doesn't present the error message box. However, once the window size is tried to be changed, the error message is popped up.

So, probably, it's a bug of iBooks not eBook itself.
The eBook file with corruption issue is "The Swift Programming Language" from Apple. With an ePub validation web tool (http://validator.idpf.org/), I confirmed that Apple put DRM ( although they didn't previously ) with the recent version of the book and also some meta tags in XML files were missing.
So, I would not opt out a case where some meta tags are not set properly.

As a programmer, I wonder how retiring from a first responder (may) solved the problem. ( may be temporarily )
However, yeah... it did work for me.

Also, I tried to remove all bookmarks and notes. It looked to help to solve this problem additionally.
(However strange, there is one note which resist to be removed. Probably iBooks for Mac has some bugs in synchronizing such information through iCloud. )

This works for me too – consistently. Open the book then quickly click anywhere (to another app or just to an empty space on the desktop) to get focus off of iBooks. After the book is open, go back to iBooks and it will stay open, and the "This book is corrupt" message doesn't appear. This is not really a fix but if you just want to read your books until Apple provides are real bug fix, this is the way to go.

This is hilarious that this actually works. 😐

In my situation I had tried to update a book but it somehow failed and then each time I tried to open it since then it says it's corrupt. What's odd is that this approach not only works but seems to also open the updated version of the book whereas when I don't try this approach, I can tell the corrupt message appears with the outdated version.

O.K. I have a similiar problem. I get the same message, but only AFTER I purchase the iBook. If I download a sample, it works fine, as do the free books. Every book on my iPad and iPhone work fine. The problem only occurs on my MacBook Pro and only with purchased books. I have solved this problem by downloading Kindle and purchasing all my books from Amazon. I had this problem years ago on my iPad, but solved it by deleting iBooks and re-installing it; since Apple has made it hard, if not impossible to do this in Mavericks, I have opted to buy all my books from Amazon. Much easier and less time consuming.

Thank you Ooneo; this only happens with my "The Swift Programming Language" book. Just curious if it may be due to my notes placed within this book and (perhaps) that the text may have been updated.

Clicking off the app worked for me too. Thanks!

Same book here. Seemed to start happening after the 1.2 update.

I have same issue and the way 0oneo suggested solved the problem. 🙂

And I only needed to do it once.

This works for me, thanks!

I have the same issue on Yosemite with the Swift book. How ironic. I will file a radar. Ridiculous.