Thanks...this is a fixed-layout that will be sold only to Fire users, so doesn't matter if it works on K3 (this is what my client is telling me). I will put it on my K3 just to see what it looks like there.....

I was just wondering if this is a full Mobi, coming only out of the single .opf file (as opposed to the entire folder containing the whole job, or an ePub, which I'm accustomed to).