I use Calibre 2.76 with Windows 10 and I had no problems converting from epub to kepub with the KePub Output plugin until last month.
Since then I have the problem that an error occurs when I try to convert an epub file into kepub - not with every file but with most of them. The same happens with epub files I have already converted before!
I did not change anything in Calibre for a long time, except updating the software and its plugins from time to time.
I have tried to solve the problem by my own with the help of the information of different threads but I failed. I deleted for example the folder "calibre" in the folder "Appdata/Roaming" and installed only the KePub Output plugin but it didn't help.
If I try the same on a different computer everything works fine. If I try it on my computer with a different user the same problem occurs, even with an administrator account.
I would be happy if anyone could help me to get rid off the problem.
Anyhow, I wish everyone of you a happy new year and all the best to you!
Best regards
Lemmi
----- and here is the error text ------
Spoiler:
calibre, version 2.76.0 (win32, embedded-python: True)
Konvertierungsfehler: Fehlgeschlagen: Buch 1 von 1 (Oh Boy, oh Girl) konvertieren
Buch 1 von 1 (Oh Boy, oh Girl) konvertieren
C:\Program Files\Calibre2\pylib.zip\dateutil\parser.py:339: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
Resolved conversion options
calibre version: 2.76.0
{'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(., '\\s*((chapter|book|section|part)\\s+)|((prolog|pr ologue|epilogue)(\\s+|$))', 'i')) or @class = 'chapter']",
'chapter_mark': u'pagebreak',
'comments': None,
'cover': u'C:\\Users\\LOKALG~1\\AppData\\Local\\Temp\\calib re_qmxbx0\\fd43eb.jpeg',
'debug_pipeline': u'E:\\Download\\temp',
'dehyphenate': True,
'delete_blank_paragraphs': True,
'disable_font_rescaling': False,
'dont_split_on_page_breaks': False,
'duplicate_links_in_toc': False,
'embed_all_fonts': False,
'embed_font_family': None,
'enable_heuristics': False,
'epub_flatten': False,
'epub_inline_toc': False,
'epub_toc_at_end': False,
'expand_css': False,
'extra_css': None,
'extract_to': None,
'filter_css': u'',
'fix_indents': True,
'flow_size': 260,
'font_size_mapping': None,
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x00000000064E9240>,
'insert_blank_line': False,
'insert_blank_line_size': 0.5,
'insert_metadata': False,
'isbn': None,
'italicize_common_cases': True,
'keep_ligatures': False,
'kepub_clean_markup': True,
'kepub_disable_hyphenation': False,
'kepub_hyphenate': True,
'kepub_replace_lang': True,
'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,
'no_chapters_in_toc': False,
'no_default_epub_cover': False,
'no_inline_navbars': False,
'no_svg_cover': False,
'output_profile': <calibre.customize.profiles.KoboReaderOutput object at 0x00000000064E9978>,
'page_breaks_before': u"//*[name()='h1' or name()='h2']",
'prefer_metadata_cover': False,
'preserve_cover_aspect_ratio': False,
'pretty_print': True,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': u'C:\\Users\\LOKALG~1\\AppData\\Local\\Temp\\calib re_qmxbx0\\mjejl5.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'',
'search_replace': '[]',
'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,
'start_reading_at': None,
'subset_embedded_fonts': False,
'tags': None,
'timestamp': None,
'title': None,
'title_sort': None,
'toc_filter': None,
'toc_threshold': 6,
'toc_title': None,
'transform_css_rules': '[]',
'unsmarten_punctuation': False,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: EPUB Input running
on C:\Users\LOKALG~1\AppData\Local\Temp\calibre_qmxbx 0\11cdk4.epub
Found HTML cover OEBPS/cover.html
Python function terminated unexpectedly
[(u'C:\\Users\\LOKALG~1\\AppData\\Local\\Temp\\cali bre_qmxbx0\\fdnapj_plumber\\OEBPS\\cover.html', u'E:\\Download\\temp\\input\\OEBPS\\cover.html', "[Errno 13] Permission denied: u'C:\\\\Users\\\\LOKALG~1\\\\AppData\\\\Local\\\\T emp\\\\calibre_qmxbx0\\\\fdnapj_plumber\\\\OEBPS\\ \\cover.html'")] (Error Code: 1)
Traceback (most recent call last):
File "site.py", line 132, in main
File "site.py", line 109, in run_entry_point
File "site-packages\calibre\utils\ipc\worker.py", line 195, in main
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 33, in gui_convert_override
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 26, in gui_convert
File "site-packages\calibre\ebooks\conversion\plumber.py", line 1066, in run
File "site-packages\calibre\ebooks\conversion\plumber.py", line 984, in dump_input
File "shutil.py", line 208, in copytree
shutil.Error: [(u'C:\\Users\\LOKALG~1\\AppData\\Local\\Temp\\cali bre_qmxbx0\\fdnapj_plumber\\OEBPS\\cover.html', u'E:\\Download\\temp\\input\\OEBPS\\cover.html', "[Errno 13] Permission denied: u'C:\\\\Users\\\\LOKALG~1\\\\AppData\\\\Local\\\\T emp\\\\calibre_qmxbx0\\\\fdnapj_plumber\\\\OEBPS\\ \\cover.html'")]