First, when trying to convert a few pdfs, I callibre-parallel.exe force closes, and then calibre tells me it has failed to convert the pdf into epub shown below:
ERROR: Conversion Error: <b>Failed</b>: Convert book 1 of 1 (Heretics of Dune)
Convert book 1 of 1 (Heretics of Dune)
Resolved conversion options
calibre version: 0.7.6
{'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\\s+', 'i')) or @class = 'chapter']",
'chapter_mark': u'pagebreak',
'comments': None,
'cover': 'c:\\users\\anra\\appdata\\local\\temp\\calibre_0. 7.6_txtxdh.jpeg',
'debug_pipeline': None,
'disable_font_rescaling': False,
'dont_split_on_page_breaks': False,
'extra_css': None,
'extract_to': None,
'flow_size': 260,
'font_size_mapping': None,
'footer_regex': u'(?i)(?<=<hr>)((\\s*<a name=\\d+></a>((<img.+?>)*<br>\\s*)?\\d+<br>\\s*.*?\\s*)|(\\s* <a name=\\d+></a>((<img.+?>)*<br>\\s*)?.*?<br>\\s*\\d+))(?=<br>)' ,
'header_regex': u'(?i)(?<=<hr>)((\\s*<a name=\\d+></a>((<img.+?>)*<br>\\s*)?\\d+<br>\\s*.*?\\s*)|(\\s* <a name=\\d+></a>((<img.+?>)*<br>\\s*)?.*?<br>\\s*\\d+))(?=<br>)' ,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x0506CBB0>,
'insert_blank_line': False,
'insert_metadata': False,
'isbn': None,
'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,
'max_toc_links': 50,
'new_pdf_engine': False,
'no_chapters_in_toc': False,
'no_default_epub_cover': False,
'no_images': False,
'no_inline_navbars': False,
'no_svg_cover': False,
'output_profile': <calibre.customize.profiles.NookOutput object at 0x0506CF30>,
'page_breaks_before': u'/',
'prefer_metadata_cover': False,
'preprocess_html': False,
'preserve_cover_aspect_ratio': False,
'pretty_print': True,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': 'c:\\users\\anra\\appdata\\local\\temp\\calibre_0. 7.6_sv8na7.opf',
'remove_first_image': False,
'remove_footer': False,
'remove_header': False,
'remove_paragraph_spacing': False,
'remove_paragraph_spacing_indent_size': 1.5,
'series': None,
'series_index': None,
'tags': None,
'timestamp': None,
'title': None,
'title_sort': None,
'toc_filter': None,
'toc_threshold': 6,
'unwrap_factor': 0.5,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: PDF Input running
on C:\Users\anra\Desktop\Nook Library\Frank Herbert\Heretics of Dune (8)\Heretics of Dune - Frank Herbert.pdf
Converting file to html...
pdftohtml log:
Retrieving document metadata...
Generating manifest...
Rendering manifest...
Parsing all content...
Parsing index.html ...
Is there any tweak or fix I can implement to get a successful conversion. Note* I have converted other pdfs into epub, but this is only happening with three files.