I can't covert to epub without a cover

[WallOfSound]

I have a load of .odt files I wrote that I would like to convert to .epub to read on my phone. They convert fine using the default settings but I get a large two page cover of the calibre logo and it's version number which I don't want. If I tick the 'no default cover' option then the conversion fails with the following error:

ERROR: Conversion Error: <b>Failed</b>: Convert book 1 of 1 (Books)

Convert book 1 of 1 (Books)
Resolved conversion options
calibre version: 0.6.55
{'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': None,
'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 0x05041250>,
'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,
'no_chapters_in_toc': False,
'no_default_epub_cover': True,
'no_inline_navbars': False,
'no_svg_cover': False,
'output_profile': <calibre.customize.profiles.OutputProfile object at 0x05041430>,
'page_breaks_before': u"//*[name()='h1' or name()='h2']",
'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\\XXXX\\appdata\\local\\temp\\calibre_0. 6.55_xd4ehs.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,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: ODT Input running
on C:\Users\XXXX\Calibre Library\XXXX\Books (7)\Books - XXXX.odt
Extracting ODT file...
Parsing all content...
Parsing index.xhtml ...
File 'index.xhtml' missing <title/> element
Generating default TOC from spine...
Merging user specified metadata...
Detecting structure...
Auto generated TOC with 0 entries.
Flattening CSS and remapping font sizes...
Transformed CSS selector .P-Standard to .p-standard
Transformed CSS selector .P-Heading to .p-heading
Transformed CSS selector .P-Text_20_body to .p-text_20_body
Transformed CSS selector .P-List to .p-list
Transformed CSS selector .P-Caption to .p-caption
Transformed CSS selector .P-Index to .p-index
Transformed CSS selector .P-Normal to .p-normal
Transformed CSS selector .MP-Standard to .mp-standard
Transformed CSS selector .P-P5 to .p-p5
Source base font size is 10.00000pt
Cleaning up manifest...
Trimming unused files from manifest...
Parsing stylesheet.css ...
Creating EPUB Output...
Looking for large trees in index.xhtml...
No large trees found
Python function terminated unexpectedly
'NoneType' object has no attribute 'find' (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 99, in main
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 24, in gui_convert
File "site-packages\calibre\ebooks\conversion\plumber.py", line 919, in run
File "site-packages\calibre\ebooks\epub\output.py", line 161, in convert
File "site-packages\calibre\ebooks\oeb\transforms\cover.py", line 86, in __call__
File "site-packages\calibre\ebooks\oeb\transforms\cover.py", line 171, in insert_cover
File "site-packages\calibre\ebooks\oeb\transforms\cover.py", line 152, in inspect_cover
File "site-packages\calibre\ebooks\oeb\base.py", line 322, in urlnormalize
File "urlparse.py", line 108, in urlparse
File "urlparse.py", line 147, in urlsplit
AttributeError: 'NoneType' object has no attribute 'find'

Any suggestions?

[jackie_w]

I have had a similar problem in v6.55 when trying to convert to EPUB after checking the [EPUB output] - "No default cover" box

[kovidgoyal]

It's a regression, will be fixed in next release.