I have decided to build my ebook from scratch by adding html via the source in Kotobee.
One thing I noticed is that if I add image in html Kotobee amends it like this:
<div class="image"><img alt="thumbs-up.jpg" src="images/thumbs-up.jpg" /></div>
<div class="image"><img alt="thumbs-up.jpg" src="images/thumbs-up_fmt.jpeg" /></div>
So Kotobee adds a _fmt suffix as well as adapting the filename from jpg to jpeg
Anyone know why this is happening and whether its a code requirement?
Are you sure an image with that same name does not currently exist in the images folder?
Can you try with a plain (blank) ebook, and just add this one image, and check if it does the behavior you're describing?