I have the same question.

Me too. Where do I find it or should I just ignore it. It looks okay to me as I didn't select a border in the first place. 

Running into the same wall.  Anyone find any solution to this, Blurb Support hasn't yet addressed my email.  Like to move beyond being stuck having no borders around my photographs in my ebook.  

I found that if you click on the image in the ebook converter then options regarding the border and changing the font properties appear. 

Click on the photo and the border icon and how to manage photos will appear along the bar at top of the screen.  

I have a problem where I've given my photos the same border throughout the book, but, for some reason one photo won't adopt it.

Come on Blurb. Where is the answer to this. Surely there is an answer.

Is there a way to put borders on all images at once in the ebook?

I plan my books and choose the borders with care. The e-book function is useless for me if the borders don't carry over or I can't add borders in the e-book software. I really regret not being able to purchase and use an e-book for my iPad.

Come on Blurb get some answers this is VERY bad

This was possible in my last book Dec/13 but now the Border icon is grayed out and useless.  I need borders on my images.