[DoctorOhh]

Originally Posted by user_none

If the file shows as AZW in Windows Explorer then it isn't an HTMLZ. The empty input error from the HTMLZ conversion is because there is not HTMLZ data in the file.

It only shows as azw in My Kindle Content, it shows as htmlz after being added to calibre.

Originally Posted by FlyFree

Yes the "Split files larger than" is still set to 260K.
The file shows up in Windows explorer as .azw

I downloaded the sample and it is a topaz file. I converted it to ePub and had the same "Page error" you saw. I opened the book in Sigil and on what looks to be the copyright page I found the following code for svg images.

Spoiler:

    <p class="cl-f-c-fr-v"><img alt="" class="calibre3" src="../Images/page0002_0000.svg" /></p>
    <div class="calibre2" id="page0003" title="pagetype_copyrt"></div>
    <p class="cl-f-c-fr-v"><img alt="" class="calibre3" src="../Images/page0003_0000.svg" /></p>
    <p class="cl-f-c-fr-v"><img alt="" class="calibre3" src="../Images/page0003_0001.svg" /></p>
    <p class="cl-f-c-fr-v"><img alt="" class="calibre3" src="../Images/page0003_0002.svg" /></p>

I removed this code and saved the file. Then I removed the book from the Sony, resent the adjusted file and it worked fine. I guess this isn't the way ADE on the Sony expects SVG files to be handled.

While your in Sigil you can go into images and delete the 4 SVG images before you save the book to reduce the size of the book.