Quote:
Originally Posted by jhowell
The most recent versions of the Kindle Previewer produce error messages and guidance on how to correct them for things that prevent KFX conversion, but this information isn't normally displayed. Perhaps someone here knows a trick to enable that feature.
One way to diagnose this is using the KFX Output plugin for calibre. It captures errors and guidance generated by the Previewer as part of the job log when a conversion to KFX is performed.
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Is it possible these guidances and error messages are being sent to stdout and/or stderr?
If so, it might be easy to capture them by starting kindle previewer from the command line with stdout and stderr redirected to file names of your choosing.