Hmm tried to write one post but it doesn't show. Second attempt:
using calibre-debug -r "KFX Output" -- -l "abcd.kpf" "abcd.kfx"
I get the following error message:
Spoiler:
Converting abcd.kpf
Processing container: abcd.kpf
Removed 3 KDF SQLite file fingerprint(s)
Adding book_navigation
Built approximate location_map with 336 locations
WARNING: Unknown KCB data: metadata/edited_tool_versions=1.47.1.0
WARNING: Unknown KCB data: metadata/edited_tool_versions=3.49.0
WARNING: Unknown KCB data: metadata/tool_version=3.49.0
kfxgen version: kfxlib-20201222
Features: CanonicalFormat-2, max_id-787, yj_non_pdf_fixed_layout-2, yj_publisher_panels-2
WARNING: Unknown kindle_audit_metadata: creator_version=1.47.1.0
Metadata: ASIN=6HEKWB6O643NOB205FP88GLETTRXHDOZ, asset_id=CR!HY9V4YMFHI947O2PBZXFZCC2IBT1, book_id=DB1BdFs9TO6nrCg5l-xDiA0, cde_content_type=EBOK, content_id=6HEKWB6O643NOB205FP88GLETTRXHDOZ, cover_image=2550x3300, file_creator=KC, is_sample=False, override_kindle_font=False, reading_orders=1, selection=enabled, yj_fixed_layout=1, yj_publisher_panels=1
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\debug.py", line 313, in main
File "calibre_plugins.kfx_output.__init__", line 258, in cli_main
File "calibre_plugins.kfx_output.__init__", line 339, in convert_from_kpf_or_zip
File "calibre_plugins.kfx_output.kfxlib.yj_book", line 91, in convert_to_single_kfx
File "calibre_plugins.kfx_output.kfxlib.kfx_contain er", line 359, in serialize
File "calibre_plugins.kfx_output.kfxlib.utilities", line 1007, in serialize
MemoryError