[KevinH]

Hi JSWolf,
please run DumpMobiHeader_v018.py on that mobi and copy what values it has for cover offset and thumbnail offset in the EXTH metadata for the old Mobi header. I am betting that the ThumbOffset is 0xFFFFFFFF which means it's missing. If so I can give you a new mobi_opf.py to fix that issue. DumpMobiHeader is an extra Python script that I have added to the KindleUnpack zip archives on occasion. Any recent version would work.

If not, then please post a test case to the KindleUnpack forum and I will try to track it down.

KevinH

Originally Posted by JSWolf

I've come across an error trying to import a Mobi eBook from Amazon. I am using Windows 7 32-bit and Python 32-bit (version 2.7.6) from Python.org with the 32-bit Sigil.

Status: failed

Traceback (most recent call last):
  File "C:\Program Files\Sigil\plugin_launchers\\python\launcher.py", line 137, in launch
    self.exitcode = target_script.run(container)
  File "C:\Users\Jon\AppData\Local\sigil-ebook\sigil\plugins\KindleImport\plugin.py", line 111, in run
    mobidir, mobi_html, mobi_opf, mobiBaseName = mp.unpackMOBI(temp_dir)
  File "C:\Users\Jon\AppData\Local\sigil-ebook\sigil\plugins\KindleImport\mobi_stuff.py", line 92, in unpackMOBI
    mu = _mu.unpackBook(self.infile, outdir, epubver=self.ePubVersion, use_hd=self.useHDImages)
  File "C:\Users\Jon\AppData\Local\sigil-ebook\sigil\plugins\KindleImport\kindleunpack\kindleunpack.py", line 871, in unpackBook
    process_all_mobi_headers(files, apnxfile, sect, mhlst, K8Boundary, False, epubver, use_hd)
  File "C:\Users\Jon\AppData\Local\sigil-ebook\sigil\plugins\KindleImport\kindleunpack\kindleunpack.py", line 794, in process_all_mobi_headers
    processMobi7(mh, metadata, sect, files, imgnames)
  File "C:\Users\Jon\AppData\Local\sigil-ebook\sigil\plugins\KindleImport\kindleunpack\kindleunpack.py", line 641, in processMobi7
    opf.writeOPF()
  File "C:\Users\Jon\AppData\Local\sigil-ebook\sigil\plugins\KindleImport\kindleunpack\mobi_opf.py", line 529, in writeOPF
    data = self.buildMobi7OPF()
  File "C:\Users\Jon\AppData\Local\sigil-ebook\sigil\plugins\KindleImport\kindleunpack\mobi_opf.py", line 467, in buildMobi7OPF
    opf_metadata = self.buildOPFMetadata(metadata_tag)
  File "C:\Users\Jon\AppData\Local\sigil-ebook\sigil\plugins\KindleImport\kindleunpack\mobi_opf.py", line 300, in buildOPFMetadata
    imageName = self.imgnames[imageNumber]
IndexError: cannot fit 'long' into an index-sized integer
Error: cannot fit 'long' into an index-sized integer