EPUB export problem

[udini]

Hello, I have a really annoying problem when exporting to EPUB (fixed layout). Indesign tells me that the file was exported, but that .pngs couldn't be created and those pngs are actually missing when I try to upload using iTunes Producer.

Error message (in German):

"Bildexport: 5 fehlgeschlagen  Fehler beim Formatieren von Bild "227.png". Auf dem System steht möglicherweise nicht genügend Arbeits- oder Festplattenspeicher zur Verfügung."

That would be not such a huge problem, if Indesign would tell me where the problematic parts

(like arrows and lines that Indesign converts into png) are located, but it doesn't!

There is most likely a problem with the file, since I tried exporting with 2 different machines, but without more info I can't find the problem!

Any ideas? Thank you very much!

[Derek Cross]

Are there any useful messages when you try and validate the ePub?

EPUB Validator (beta)

[udini]

Thanks Derek! Unfortunately the EPUB Validator only takes files up to 10MB, whereas mine is a big project with 280MB. I know for sure of one page though that is causing problems, would you recommend to export only this page to EPUB and than see what the validator says?

[Derek Cross]

Aren't you going to find it difficult to distribute this ePub. Have you established why it's so large?

This is a brilliant (paid for) validator: FlightDeck

[udini]

Derek, I deleted most of the pages except the known trouble maker page. The validator essentially give the same error message as iTunes producer, "Error while parsing file 'element "img" missing required attribute "src"'." since InDesign failed to create the png in the first place (for memory reasons it says, but this can't be the true problem).

As far as I can see, it is most likely some kind of lines or arrows that Indesign is having a problem with to convert to .png. Since this could be on any page and since there is no warning or prompt to a potential problem, I have no idea how to ever create a EPUB from this file...

[Derek Cross]

Just for testing purposes try it with Publish Online, which essentially is a FXL ePub.

[udini]

Derek, the problem comes from InDesign not exporting those pngs and it's insufficient feedback!

[Derek Cross]

Maybe take it in stages. Create say 4 pages with some text – headings and body copy – with a couple of pics, then export it as a FXL ePub and see how it renders.