[dracodoc]

I was trying to convert this book into epub:
Structure And Interpretation Of Computer Programs

which is a free available text.
I have a chm decompressed folder, which include chapter htmls, images, table of content html. I draged the table of content html to calibre, then convert it to epub.

The problems are:
1. I can jump between links in calibre epub viewer, but sony 505 will jump to random location by link.
2. the chapters are arranged in random order. I have following htmls:
content\book-z-h-4.xhtml until book-z-h-9.xhtml
content\book-Z-H-10.xhtml until book-Z-H-38.xhtml

but they are located in random order in book, so chapter 1 in page 410, chapter 1.2 in page 150 etc.

I found this in metadata.opf

</metadata>
<manifest>
<item id="id1" href="content/calibre_title_page.html" media-type="application/xhtml+xml"/>
<item id="id2" href="content/book-z-h-4.xhtml" media-type="application/xhtml+xml"/>
<item id="id3" href="content/book-Z-H-5.xhtml" media-type="application/xhtml+xml"/>
<item id="id4" href="content/book-Z-H-4.xhtml" media-type="application/xhtml+xml"/>
<item id="id5" href="content/book-Z-H-6.xhtml" media-type="application/xhtml+xml"/>
<item id="id6" href="content/book-Z-H-29.xhtml" media-type="application/xhtml+xml"/>
<item id="id7" href="content/book-Z-H-22.xhtml" media-type="application/xhtml+xml"/>
<item id="id8" href="content/book-Z-H-15.xhtml" media-type="application/xhtml+xml"/>
<item id="id9" href="content/book-Z-H-14.xhtml" media-type="application/xhtml+xml"/>
<item id="id10" href="content/book-Z-H-10.xhtml" media-type="application/xhtml+xml"/>
<item id="id11" href="content/book-Z-H-12.xhtml" media-type="application/xhtml+xml"/>
<item id="id12" href="content/book-Z-H-11.xhtml" media-type="application/xhtml+xml"/>
<item id="id13" href="content/book-Z-H-24.xhtml" media-type="application/xhtml+xml"/>
<item id="id14" href="content/book-Z-H-18.xhtml" media-type="application/xhtml+xml"/>
<item id="id15" href="content/book-Z-H-17.xhtml" media-type="application/xhtml+xml"/>
<item id="id16" href="content/book-Z-H-16.xhtml" media-type="application/xhtml+xml"/>
<item id="id17" href="content/book-Z-H-20.xhtml" media-type="application/xhtml+xml"/>
<item id="id18" href="content/book-Z-H-21.xhtml" media-type="application/xhtml+xml"/>
<item id="id19" href="content/book-Z-H-34.xhtml" media-type="application/xhtml+xml"/>
<item id="id20" href="content/book-Z-H-31.xhtml" media-type="application/xhtml+xml"/>
<item id="id21" href="content/book-Z-H-35.xhtml" media-type="application/xhtml+xml"/>
<item id="id22" href="content/book-Z-H-26.xhtml" media-type="application/xhtml+xml"/>
<item id="id23" href="content/book-Z-H-32.xhtml" media-type="application/xhtml+xml"/>
<item id="id24" href="content/book-Z-H-28.xhtml" media-type="application/xhtml+xml"/>
<item id="id25" href="content/book-Z-H-27.xhtml" media-type="application/xhtml+xml"/>
<item id="id26" href="content/book-Z-H-33.xhtml" media-type="application/xhtml+xml"/>
<item id="id27" href="content/book-Z-H-23.xhtml" media-type="application/xhtml+xml"/>
<item id="id28" href="content/book-Z-H-7.xhtml" media-type="application/xhtml+xml"/>
<item id="id29" href="content/book-Z-H-8.xhtml" media-type="application/xhtml+xml"/>
<item id="id30" href="content/book-Z-H-9.xhtml" media-type="application/xhtml+xml"/>
<item id="id31" href="content/book-Z-H-13.xhtml" media-type="application/xhtml+xml"/>
<item id="id32" href="content/book-Z-H-19.xhtml" media-type="application/xhtml+xml"/>
<item id="id33" href="content/book-Z-H-25.xhtml" media-type="application/xhtml+xml"/>
<item id="id34" href="content/book-Z-H-30.xhtml" media-type="application/xhtml+xml"/>
<item id="id35" href="content/book-Z-H-36.xhtml" media-type="application/xhtml+xml"/>
<item id="id36" href="content/book-Z-H-37.xhtml" media-type="application/xhtml+xml"/>
<item id="id37" href="content/book-Z-H-38.xhtml" media-type="application/xhtml+xml"/>

why would this happen?