[edarksword]

Sometimes when sideloading an ebook, my Kobo Glo freezes and then requires the ebook to be removed from the device before the Glo can be used again. There is no error message and if more than one ebook is being loaded, I have to remove them one by one until I find the bad one. Hopefully Kobo will fix this in the firmware so an error message displays the filename of the bad book.

Does anyone know the specific problem with the ebook that causes it? I would like to create a utility that would check for this issue, and thus avoid trying to load it onto the Kobo in the first place.

Failing that, I would like to try to find out what the problem is. I figure it is one of three types of issues: badly formed zip file, Epub content problem, Epub style problem (CSS sheets). I have built a utility to check for the first two issues. I'm holding back on the third, hoping it is not a CSS issue. The problem is that most epubs (retail and free) have mutliple issues, but seem to load fine. It must be a specific issue or issues.

I have a number of epubs that I have loaded successfully. I have a handfull of epubs that I have verified fail when loading. Finding out which issues are preventing the Kobo loading is the problem.

Is there any interest in digging into this further?