Help! Conversion failing...

[Zerotoeleven]

...and I'm not smart enough to figure out what's wrong.

I have an epub book I'd like to convert to mobi, but I'm getting a failure to convert message.

Can someone walk me through what I might be doing wrong? Keep in mind I'm a bit of a luddite.

[Zerotoeleven]

Here's the error I'm getting.

calibre, version 0.7.53
ERROR: Conversion Error: <b>Failed</b>: Convert book 1 of 1

Convert book 1 of 1
Resolved conversion options
calibre version: 0.7.53
{'asciiize': False,
'author_sort': None,
'authors': None,
'base_font_size': 0.0,
'book_producer': None,
'change_justification': u'original',
'chapter': u"//*[((name()='h1' or name()='h2') and re:test(., 'chapter|book|section|part|prologue|epilogue\\s+', 'i')) or @class = 'chapter']",
'chapter_mark': u'pagebreak',
'comments': None,
'cover': 'c:\\docume~1\\sean~1.sea\\locals~1\\temp\\calibre _0.7.53_tmp_ym0cqm\\calibre_0.7.53_hekut8.jpeg',
'debug_pipeline': None,
'dehyphenate': True,
'delete_blank_paragraphs': True,
'disable_font_rescaling': False,
'dont_compress': False,
'enable_heuristics': False,
'extra_css': None,
'fix_indents': True,
'font_size_mapping': None,
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x043D7510>,
'insert_blank_line': False,
'insert_metadata': False,
'isbn': None,
'italicize_common_cases': True,
'keep_ligatures': False,
'language': None,
'level1_toc': None,
'level2_toc': None,
'level3_toc': None,
'line_height': 0.0,
'linearize_tables': False,
'margin_bottom': 5.0,
'margin_left': 5.0,
'margin_right': 5.0,
'margin_top': 5.0,
'markup_chapter_headings': True,
'max_toc_links': 50,
'minimum_line_height': 120.0,
'mobi_ignore_margins': False,
'no_chapters_in_toc': False,
'no_inline_navbars': True,
'no_inline_toc': False,
'output_profile': <calibre.customize.profiles.KindleOutput object at 0x043D7830>,
'page_breaks_before': u'/',
'personal_doc': u'[PDOC]',
'prefer_author_sort': False,
'prefer_metadata_cover': False,
'pretty_print': False,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': 'c:\\docume~1\\sean~1.sea\\locals~1\\temp\\calibre _0.7.53_tmp_ym0cqm\\calibre_0.7.53_pvjyqa.opf',
'remove_fake_margins': True,
'remove_first_image': False,
'remove_paragraph_spacing': False,
'remove_paragraph_spacing_indent_size': 1.5,
'renumber_headings': True,
'replace_scene_breaks': u'',
'rescale_images': False,
'series': None,
'series_index': None,
'smarten_punctuation': False,
'sr1_replace': None,
'sr1_search': None,
'sr2_replace': None,
'sr2_search': None,
'sr3_replace': None,
'sr3_search': None,
'tags': None,
'timestamp': None,
'title': None,
'title_sort': None,
'toc_filter': None,
'toc_threshold': 6,
'toc_title': None,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: EPUB Input running
on C:\***deleted for privacy***
Python function terminated unexpectedly
File is not a zip file (Error Code: 1)
Traceback (most recent call last):
File "site.py", line 103, in main
File "site.py", line 85, in run_entry_point
File "site-packages\calibre\utils\ipc\worker.py", line 119, in main
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 31, in gui_convert_override
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 25, in gui_convert
File "site-packages\calibre\ebooks\conversion\plumber.py", line 915, in run
File "site-packages\calibre\customize\conversion.py", line 204, in __call__
File "site-packages\calibre\ebooks\epub\input.py", line 137, in convert
File "site-packages\calibre\utils\zipfile.py", line 744, in __init__
File "site-packages\calibre\utils\zipfile.py", line 779, in _GetContents
File "site-packages\calibre\utils\zipfile.py", line 794, in _RealGetContents
calibre.utils.zipfile.BadZipfile: File is not a zip file

[DoctorOhh]

Originally Posted by Zerotoeleven

File "site-packages\calibre\utils\zipfile.py", line 794, in _RealGetContents
calibre.utils.zipfile.BadZipfile: File is not a zip file

I'm guessing your ePub is corrupt. It is unable to unzip the epub to parse the contents. I'm betting you can't view it with calibre's viewer either, can you?