Tokens not ascii encoded

[levko]

I'm trying to convert RTF file containing Cyrillic text into EPUB format in Calibre 0.8.56. Here is what I get (I tried different input character encoding options):

Invalid RTF: Tokens not ascii encoded.
'ascii' codec can't decode byte 0xd8 in position 4: ordinal not in range(128)
Error at line 1877
Exception in token processing (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 191, 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 979, in run
File "site-packages\calibre\customize\conversion.py", line 208, in __call__
File "site-packages\calibre\ebooks\conversion\plugins\rtf_inp ut.py", line 244, in convert
File "site-packages\calibre\ebooks\conversion\plugins\rtf_inp ut.py", line 103, in generate_xml
File "site-packages\calibre\ebooks\rtf2xml\ParseRtf.py", line 247, in parse_rtf
calibre.ebooks.rtf2xml.ParseRtf.InvalidRtfExceptio n:
Invalid RTF: Tokens not ascii encoded.
'ascii' codec can't decode byte 0xd8 in position 4: ordinal not in range(128)
Error at line 1877
Exception in token processing

Any help would be greatly appreciated.

-- LK

[levko]

Based on one of Kovid Goyal's comments, I tried HTML workaround: saving RTF file as HTML using UTF-8 encoding and then converting HTML file to EPUB in Calibre. It works, however the result is not as good as normal RTF->EPUB conversion.

Thanks,
-- LK