View Full Version : Error help: "Invalid input object: NoneType"

02-02-2010, 09:56 AM

I'm trying to create my first manual ePub, in a bid to understand it all a bit better and hopefully end up with a cleaner, leaner ePub file.

So far I've successfully tagged my source InDesign file with XML and converted that to a valid XHTML document, and generated all the other bits of the folder to be zipped into epub (following the useful tutorial at

But something is not right - Digital Editions complains of "minor errors" and then doesn't even show it, while Calibre adds it to the library but says "Invalid input object: NoneType" when I try to view the file.

Can anyone point me in the right direction?


02-14-2010, 09:16 AM
Try using Calibre to convert this ePub to ePub and see if that might fix whatever is wrong.