Vade Mecum can't see Calibre-converted PDB files

[dakine]

Originally Posted by user_none

I have begun work on supporting Plucker as an input format. Time table for initial inclusion (won't support all features of the format) should be less than one month.

Any progress? Just checked the very latest version (v0.8.22) and wasn't able to convert an ebook in Plucker format yet, or maybe the below is simply a bug? If so, any other info I can provide to help resolve this?
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Detected ebook format as: Plucker with identity: DataPlkr
Python function terminated unexpectedly
unpack requires a string argument of length 2 (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 187, 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 947, in run
File "site-packages\calibre\customize\conversion.py", line 204, in __call__
File "site-packages\calibre\ebooks\pdb\input.py", line 30, in convert
File "site-packages\calibre\ebooks\pdb\plucker\reader.py", line 332, in __init__
File "site-packages\calibre\ebooks\pdb\plucker\reader.py", line 202, in __init__
struct.error: unpack requires a string argument of length 2

[user_none]

Please open a bug report and attach the file.