Fatal errors, how to solve?

[DanielRuf]

I get these fatal errors on my console:

[Fatal Error] :1:2: Markup im Dokument vor dem Root-Element muss ordnungsgemäß formatiert sein.
[Fatal Error] :18:49: Präfix "opf" für Attribut "opf:scheme", das mit Elementtyp "dc:identifier" verknüpft ist, ist nicht gebunden.

How to catch these exceptions and solve them?
Where do they come from?

Seems this comes from XMLPull.
But what API/version do we need from XMLPull?

Are there more dependencies?
What is with org.w3c.dom?

[psiegman]

Hi Daniel,

This error means that the opf document is missing the namespace declaration for the opf prefix.
Unzip the epub file, and check the index xml files.
Open the file /META-INF/container.xml and find the file referenced by rootFile.
Then open the file mentioned there.

Paul

[DanielRuf]

So these files can not be parsed and we can not retrieve the information about author and title?
These are invalid epub files?

[psiegman]

Yes, they seem to be invalid.
Can you send me one so I can have a look ?

Paul

[DanielRuf]

I can do so, if I have it again. It is on another computer