Originally Posted by Tugger
So is this plugin no longer supported/deprecated?
No. According to Calibre - Preferences - Plugins the latest version of this plugin was released on 18 Jun 2012 and the author is DiapDealer. DiapDealer last responded to a post in this thread 9 days ago. So asking if this plugin is "no longer supported/deprecated" is extremely passive aggressive.
It would have been more polite to add some details about your situation and ask again.
Does it happen with every book?
Was it a prc, mobi or azw?
How large is the book?
Is the book unique in any way, dictionary, bible, programming guide?
What is the origin/source of the book?
Since you reported a memory error I'm guessing you ran out of memory with this book and that this problem doesn't happen with other books.
With any luck someone with more might be along to help you further.