Caption has disappeared

I am making a book of over 40 pages. On three of the pages the captions does not show when I preview the book. I can click on where the caption box is supposed to be, and the box appears showing the caption. But, when I preview the book, the caption is gone.

I am not sure how to deal with this, and I don't want to order the book until I can see all the captions.

[mypublisher]

Did you include manual spacing (like returns) that may be pushing the text outside the margins of the text box? If so, please go back and delete all extra spaces. Returns should not be used to format the text.

Also, if you could provide a little more info, it will help us to suggest a fix.
Are you using BookMaker for Mac or for PC?
What Book Style are you using?
Does it happen with the same page layout or different layouts?

Message was edited by: mypublisher