azw file convert fails in Calibre with K4PC v 3.8

[staticGenerator]

Running:
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Windows 7
Calibre v 8.27
K4PC 3.8 appears under 'File Type' plugins
kindle for pc version 1.4.

History:
Attempted skindle, no success.
Tried Book import into Calibre. Shows imported successfully as azw file.
Attempt to convert book from 'AZW' to 'PDF' results in the following:

InputFormatPlugin: MOBI Input running
on c:\users\price\appdata\local\temp\calibre_0.8.27_tmp_gprgd7\book1.azw
Python function terminated unexpectedly
  This is an Amazon Topaz book. It cannot be processed. (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 959, in run
  File "site-packages\calibre\customize\conversion.py", line 204, in __call__
  File "site-packages\calibre\ebooks\mobi\input.py", line 26, in convert
  File "site-packages\calibre\ebooks\mobi\reader.py", line 284, in __init__
calibre.ebooks.mobi.reader.TopazError: This is an Amazon Topaz book. It cannot be processed.

Tried importing from Calibre command line prompt. Results in the following:

C:\Users\PRICE\Documents\My Kindle Content>calibredb add book1.azw
 is not a valid Kindle serial number or PID.
K4MobiDeDRM v0.3.8: Calibre configuration directory = C:\Users\PRICE\AppData\Roa
ming\calibre
No K4PC 1.5.X .kinf files have not been found.

Trying:  BXS2T663

Trying:  iDHDx9aa
Book Key Found!

Processing Section: img
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Processing Section: other
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Processing Section: dict
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Processing Section: glyphs
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Processing Section: page
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Processing Section: metadata
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Successfully Extracted Topaz contents
Updating to color images if available
Creating cover.jpg
Processing Dictionary
Processing Meta Data and creating OPF
Processing StyleSheet
Running file type plugin K4PC, K4Mac, Kindle Mobi and Topaz DeDRM failed with tr
aceback:
Traceback (most recent call last):
  File "site-packages\calibre\customize\ui.py", line 148, in _run_filetype_plugi
ns
  File "calibre_plugins.k4mobidedrm.__init__", line 83, in run
  File "calibre_plugins.k4mobidedrm.topazextract", line 297, in processBook
  File "calibre_plugins.k4mobidedrm.genbook", line 390, in generateBook
  File "calibre_plugins.k4mobidedrm.stylexml2css", line 254, in getpageIDMap
  File "calibre_plugins.k4mobidedrm.stylexml2css", line 90, in getData
ValueError: invalid literal for int() with base 10: '4.synthetic'
Backing up metadata
Notifying calibre of the change

File is now imported as a TPZ file in Calibre. Attempt to convert TPZ file results in the following error within Calibre:

calibre, version 0.8.27
WARNING: Could not convert some books: Could not convert 1 of 1 books, because no suitable source format was found.

Any suggestions here?