Problems with Sony .lrf Files

[lgadams]

I had a Sony PRS-505 reader that uses the .lrf format for books and I converted all my books to that format using BookDesigner. All went well and that reader and my new Sony PRS-650 can use the files. Since the Sony software won't work on my 64 bit windows seven operating system I was trying to use Calibre. It loaded the library fine but when I try to view the books I get this error:

Traceback (most recent call last):
File "site-packages\calibre\gui2\lrf_renderer\main.py", line 33, in run
File "site-packages\calibre\ebooks\lrf\lrfparser.py", line 28, in parse
File "site-packages\calibre\ebooks\lrf\lrfparser.py", line 56, in _parse_objects
File "site-packages\calibre\ebooks\lrf\objects.py", line 857, in initialize
KeyError: 'fontweight'

If I try to convert them to epub I get this error:

Convert book 1 of 1 (Flag in Exile)
Resolved conversion options
calibre version: 0.7.46
{'asciiize': False,
'author_sort': None,
'authors': None,
'base_font_size': 12.0,
'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:\\users\\larry\\appdata\\local\\temp\\calibre_0 .7.46_tmp_ontzbb\\calibre_0.7.46_vkxaal.jpeg',
'debug_pipeline': None,
'dehyphenate': True,
'delete_blank_paragraphs': True,
'disable_font_rescaling': False,
'dont_split_on_page_breaks': False,
'enable_heuristics': True,
'epub_flatten': False,
'extra_css': u'@font-face {\nfont-family:"Time New Roman";\nfont-weight: normal;\nfont-style: normal;\nsrc:url(res:///Data/fonts/Time New Roman.ttf);\n}\n@font-face { \nfont-family:"Time New Roman";\nfont-weight: bold; \nfont-style: normal; \nsrc:url(res:///Data/fonts/Time New Roman.ttf);\n}\n@font-face { \nfont-family:"Time New Roman";\nfont-weight: normal; \nfont-style: italic;\nsrc:url(res:///Data/fonts//Time New Roman.ttf);\n}\n@font-face { \nfont-family:"Time New Roman";\nfont-weight: bold; \nfont-style: italic;\nsrc:url(res:///Data/fonts//Time New Roman.ttf);\n}\n\nbody {font-family:"Time New Roman", serif;\n}',
'extract_to': None,
'fix_indents': True,
'flow_size': 260,
'font_size_mapping': u'7.5, 9.0, 10.0, 12.0, 15.5, 20.0, 22.0, 24.0',
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.SonyReaderInput object at 0x05A96C10>,
'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,
'no_chapters_in_toc': False,
'no_default_epub_cover': False,
'no_inline_navbars': False,
'no_svg_cover': False,
'output_profile': <calibre.customize.profiles.SonyReader900Output object at 0x05A96F50>,
'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': 'c:\\users\\larry\\appdata\\local\\temp\\calibre_0 .7.46_tmp_ontzbb\\calibre_0.7.46_nadezp.opf',
'remove_first_image': False,
'remove_paragraph_spacing': False,
'remove_paragraph_spacing_indent_size': 1.5,
'renumber_headings': True,
'replace_scene_breaks': u'',
'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,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: LRF Input running
on C:\E-Books\David Weber\Flag in Exile (124)\Flag in Exile - David Weber.lrf
Generating XML
Python function terminated unexpectedly
'fontweight' (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 110, 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 904, in run
File "site-packages\calibre\customize\conversion.py", line 204, in __call__
File "site-packages\calibre\ebooks\lrf\input.py", line 366, in convert
File "site-packages\calibre\ebooks\lrf\lrfparser.py", line 28, in parse
File "site-packages\calibre\ebooks\lrf\lrfparser.py", line 56, in _parse_objects
File "site-packages\calibre\ebooks\lrf\objects.py", line 857, in initialize
KeyError: 'fontweight'

I can't seem to figure out this fontweight error anybody run into this before?

[user_none]

fontweight is an internal object of the LRF file calibre does not understand. Calibre's LRF input was designed to only work reliably with LRF's produced by calibre.

[lgadams]

Wow that seems like a dead end. Are there other converter programs to change these files?

[kovidgoyal]

Well that particular error is rather easy to workaround. The workaround will be in the next release.

[lgadams]

Thanks I look forward to the new release then.