[greenjr52]

I am using a Kindle (so need MOBI format files). I regularly download ePub files from my local public digital library (which uses Overdrive as a delivery platform) and then use Calibre to convert the files into MOBI.

In the past, I've had no problems at using this process, but recently I've had problems with a few books. Some work just fine, but others give an error message indicating an ODF error in the source file, even though the source ePub file is fully readable in Adobe Digital Editions. Have Overdrive changed their file format recently? Are they adding additional protection to stop us from converting? Is there a solution?

I attach the error log.

Can anyone help?