Conversion problem from PRC to anything

[EricLandes]

I picked up a recent free Kindle book on Amazon. (This one to be precise.) I noticed it had an embedded font. I thought I'd try to convert it to a different format to see how that was done and have discovered I'm unable to do so.

I don't believe there are any DRM issues with this file.

I receive the following error from Calibre 0.6.38 when trying to convert to ANY format. Thanks for any advice!

ERROR: Conversion Error: <b>Failed</b>: Convert book 1 of 1 (youngpeople.prc)

Convert book 1 of 1 (youngpeople.prc)
Resolved conversion options
{'asciiize': False,
 'author_sort': None,
 'authors': None,
 'base_font_size': 0.0,
 'book_producer': None,
 '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_justify': 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 0x03FA70F0>,
 'insert_blank_line': False,
 'insert_metadata': False,
 'isbn': None,
 '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': False,
 'no_inline_navbars': False,
 'output_profile': <calibre.customize.profiles.KindleOutput object at 0x03FA73F0>,
 'page_breaks_before': u"//*[name()='h1' or name()='h2']",
 'prefer_metadata_cover': False,
 'preprocess_html': False,
 'pretty_print': True,
 'publisher': None,
 'rating': None,
 'read_metadata_from_opf': 'c:\\users\\elandes\\appdata\\local\\temp\\calibre_0.6.38_izqb3d.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,
 'title': None,
 'title_sort': None,
 'toc_filter': None,
 'toc_threshold': 6,
 'use_auto_toc': False,
 'verbose': 2}
InputFormatPlugin: MOBI Input running
on o:\general library\Unknown\youngpeople.prc (6)\youngpeople.prc - Unknown.prc
Python function terminated unexpectedly
  Unknown book type: |�>��'�H (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 745, in run
  File "site-packages\calibre\customize\conversion.py", line 211, in __call__
  File "site-packages\calibre\ebooks\mobi\input.py", line 26, in convert
  File "site-packages\calibre\ebooks\mobi\reader.py", line 267, in __init__
calibre.ebooks.mobi.MobiError: Unknown book type: |�>��'�H

[user_none]

PRC is a generic extension that can be a number of different formats. Most of the time it is MOBI. However, in the case of Kindle4PC it uses .prc for all books. This book is in the Topaz format which calibre does not support.

[EricLandes]

Well, that explains that, then. Thanks!