Problem converting CBR comic into PDF

As the title says, I'm trying to convert a CBR comic into PDF format for use on a Kindle. The process won't work for reasons I don't understand, and the details regarding the failure make no sense to me. Nonetheless, I have pasted the error message details below in the hope someone who does understand it can help me.


Convert book 1 of 1 (Dead Boy Detectives #02)
Resolved conversion options
calibre version: 0.9.14
{'asciiize': False,
'author_sort': None,
'authors': None,
'base_font_size': 0.0,
'book_producer': None,
'change_justification': 'left',
'chapter': None,
'chapter_mark': u'pagebreak',
'colors': 256,
'comic_image_size': None,
'comments': None,
'cover': u'C:\\Users\\User\\AppData\\Local\\Temp\\calibre_0 .9.14_tmp_quscxm\\ifgfit.jpeg',
'custom_size': None,
'debug_pipeline': None,
'dehyphenate': True,
'delete_blank_paragraphs': True,
'despeckle': False,
'disable_font_rescaling': True,
'disable_trim': False,
'dont_add_comic_pages_to_toc': False,
'dont_grayscale': False,
'dont_normalize': False,
'dont_sharpen': False,
'duplicate_links_in_toc': False,
'embed_font_family': None,
'enable_heuristics': False,
'extra_css': None,
'filter_css': u'',
'fix_indents': True,
'font_size_mapping': None,
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x0411CAF0>,
'insert_blank_line': False,
'insert_blank_line_size': 0.5,
'insert_metadata': False,
'isbn': None,
'italicize_common_cases': True,
'keep_aspect_ratio': False,
'keep_ligatures': False,
'landscape': False,
'language': None,
'level1_toc': None,
'level2_toc': None,
'level3_toc': None,
'line_height': 0.0,
'linearize_tables': False,
'margin_bottom': 0,
'margin_left': 0,
'margin_right': 0,
'margin_top': 0,
'markup_chapter_headings': True,
'max_toc_links': 50,
'minimum_line_height': 120.0,
'no_chapters_in_toc': False,
'no_inline_navbars': False,
'no_process': False,
'no_sort': False,
'old_pdf_engine': False,
'output_format': u'png',
'output_profile': <calibre.customize.profiles.GenericEink object at 0x0411CCF0>,
'override_profile_size': False,
'page_breaks_before': None,
'paper_size': u'letter',
'pdf_default_font_size': 20,
'pdf_mark_links': False,
'pdf_mono_family': u'Courier New',
'pdf_mono_font_size': 16,
'pdf_sans_family': u'Helvetica',
'pdf_serif_family': u'Times New Roman',
'pdf_standard_font': u'serif',
'prefer_metadata_cover': False,
'preserve_cover_aspect_ratio': False,
'pretty_print': False,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': u'C:\\Users\\User\\AppData\\Local\\Temp\\calibre_0 .9.14_tmp_quscxm\\2ajcrp.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'',
'right2left': False,
'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,
'uncompressed_pdf': False,
'unit': u'inch',
'unsmarten_punctuation': False,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2,
'wide': False}
InputFormatPlugin: Comic Input running
on C:\Users\User\AppData\Local\Temp\calibre_0.9.14_tm p_quscxm\15iwxv.cbr
Python function terminated unexpectedly
Invalid CRC for item (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 186, 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 1009, in run
File "site-packages\calibre\customize\conversion.py", line 239, in __call__
File "site-packages\calibre\ebooks\conversion\plugins\comic_i nput.py", line 180, in convert
File "site-packages\calibre\ebooks\conversion\plugins\comic_i nput.py", line 129, in get_pages
File "site-packages\calibre\ebooks\comic\input.py", line 32, in extract_comic
File "site-packages\calibre\__init__.py", line 283, in extract
File "site-packages\calibre\utils\unrar.py", line 150, in extract
File "site-packages\calibre\utils\unrar.py", line 146, in stream_extract
File "site-packages\calibre\utils\unrar.py", line 72, in process_current_item
calibre.utils.unrar.UNRARError: Invalid CRC for item




Thanks for any help you can provide.