Compare AZW3 to ORIGINAL_AZW3 gives ValueError Not a ZIP file
Ever since the ability was added to right-click on an AZW3 file and select "Compare to the ORIGINAL_AZW3" format", all I have gotten is the following error. It has never worked for any AZW3 ebook I've tried. It also doesn't work the other way, ORIGINAL_AZW3 to AZW3.
Comparing AZW3 files inside the Edit Book to a saved AZW3 file on disk does work.
Is it perhaps because the filename extensions are different?
I just updated today to Calibre Portable version 1.48, running under Windows 8.1 64-bit with all updates installed.
<email address hidden>
calibre, version 1.48.0
ERROR: Unhandled exception: <b>ValueError<
calibre 1.48 Portable isfrozen: True is64bit: False
Windows-8-6.2.9200 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '8', '6.2.9200')
Windows: ('8', '6.2.9200', '', 'Multiprocessor Free')
Traceback (most recent call last):
ValueError: Not a ZIP file