[jhowell]

Originally Posted by Raoden

I'm not able to convert from EPUB to KFX. Conversion Failure Reason says Log File is missing. The annoying part is that the logs show the message "Book converted successfully!" right before failing. Had a look at the code on github but wasn't able to figure out whats going on. It seems like some of the output from the conversion ends up in a different folder in \Temp from the one that contains the following log, but that might be intended behavior.

Here is a pastebin with the output

Book converted successfully! : C:/Users\Cula\AppData\Local\Temp\calibre_yd8hchbs\imt 8tfyk\2hufol7zc3xx3pw79ee7\b2pklunz.epub
Book Conversion failed. C:/Users\Cula\AppData\Local\Temp\calibre_yd8hchbs\imt 8tfyk\2hufol7zc3xx3pw79ee7\b2pklunz.epub

The output from the Kindle Previewer shows both success and failure! That is likely caused by something in the content of that book triggering a bug in the Previewer.

Log file is missing: C:\Users\Cula\AppData\Local\Temp\calibre_yd8hchbs\ imt8tfyk\2hufol7zc3xx3pw79ee7\0000\Logs\b2pklunz_l og.csv

That message is produced by the KFX Output plugin indicating that the Kindle Previewer failed to produce the expected conversion log file. That is another indication of something going wrong with the Previewer.

I have no idea of what content within that book might be triggering the problem. Because this is an error I have never seen before I am willing to take a look at the file being converted to try to determine what is going wrong. If you want to post it here on MobileRead, you will need to first remove the copyrighted text. That can be done using the ScrambleEbook plugin.

Otherwise, here is my advice for dealing with conversion errors from the first post in this thread:

When Previewer errors occur it can be a tedious trial-and-error process to get a book to convert to KFX. One procedure is to use the calibre editor to selectively remove pieces of the source book until conversion is successful. This will narrow down what part of the book is causing the Previewer failure. This requires knowledge of EPUB and HTML details, can take a lot of time and effort, and may not be ultimately successful.

An easier method that will often allow a book to be converted to KFX format is to do the conversion in two steps. First convert the book to MOBI format with the "MOBI file type" option in the MOBI Output tab set to "old". Then convert from MOBI to KFX. This works because some types of HTML formatting are stripped out during conversion to MOBI and this may include whatever is blocking KFX conversion. However the resulting KFX file will be missing some of the formatting of the original book.