This seems to be a continuation of bug #1922503.
Trying to open the file (attached; the only difference between this one and the one attached to #1922503 is this one's name being in Russian) causes an error:
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calibre, version 5.15.0
ERROR: Loading book failed: Failed to open the book at C:\Users\<username>\Downloads\11 - Пояснение морских терминов.chm. Click "Show details" for more info.
Failed to convert book: C:\Users\<username>\Downloads\11 - Пояснение морских терминов.chm with error:
InputFormatPlugin: CHM Input running
on C:\Users\<username>\Downloads\11 - Пояснение морских терминов.chm
Failed to run pipe worker with command: from calibre.srv.render_book import viewer_main; viewer_main()
Traceback (most recent call last):
File "calibre\customize\ui.py", line 433, in get_file_type_metadata
File "calibre\customize\builtins.py", line 186, in get_metadata
File "calibre\ebooks\chm\metadata.py", line 177, in get_metadata
File "calibre\ebooks\chm\metadata.py", line 140, in get_metadata_from_reader
File "calibre\ebooks\chm\reader.py", line 125, in GetFile
calibre.ebooks.chm.reader.CHMError: Unable to locate '/11 - Ïîÿñíåíèå ìîðñêèõ òåðìèíîâ.htm' within CHM file 'b'C:\\Users\\<username>\\AppData\\Local\\Temp\\calibre_yr1hhusg\\4j8rkfi6_chm_metadata.chm''
Traceback (most recent call last):
File "runpy.py", line 194, in _run_module_as_main
File "runpy.py", line 87, in _run_code
File "site.py", line 82, in <module>
File "site.py", line 77, in main
File "site.py", line 49, in run_entry_point
File "calibre\utils\ipc\worker.py", line 197, in main
File "<string>", line 1, in <module>
File "calibre\srv\render_book.py", line 823, in viewer_main
File "calibre\srv\render_book.py", line 814, in render_for_viewer
File "calibre\srv\render_book.py", line 791, in render
File "calibre\ebooks\oeb\iterator\book.py", line 63, in extract_book
File "calibre\customize\conversion.py", line 245, in __call__
File "calibre\ebooks\conversion\plugins\chm_input.py", line 57, in convert
File "calibre\ebooks\conversion\plugins\chm_input.py", line 27, in _chmtohtml
File "calibre\ebooks\chm\reader.py", line 49, in __init__
calibre.ebooks.chm.reader.CHMError: Unable to open CHM file 'b'C:\\Users\\<username>\\Downloads\\11 - \xd0\x9f\xd0\xbe\xd1\x8f\xd1\x81\xd0\xbd\xd0\xb5\xd0\xbd\xd0\xb8\xd0\xb5 \xd0\xbc\xd0\xbe\xd1\x80\xd1\x81\xd0\xba\xd0\xb8\xd1\x85 \xd1\x82\xd0\xb5\xd1\x80\xd0\xbc\xd0\xb8\xd0\xbd\xd0\xbe\xd0\xb2.chm''
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Calibre version: 5.15,
OS: Windows 10 Home 1803.
There's another issue; since it seems to be related to the one above, I thought I shouldn't open a new bug report.
The viewer opens the attached file, "bends.chm", but doesn't load the images. Double-clicking on the placeholder for the very first one (just below "Не пытайтесь связывать этим узлом синтетические тросы и леску: на них он ползет") causes an error dialogue to pop up:
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calibre, version 5.15.0
ERROR: Invalid image: Failed to load the image 03 - Узлы для связывания двух тросов.
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