Issue on attempt to create a simple eBook

[Roman Bicherschii]

Hi,

I'm looking for a way to render(convert) an eBook within java application.  

Occasionally walked through Epublib (sincerely was expecting richer set of java API's for the eBooks, but any way was glad to find at least something).

But get in trouble trying to reproduce simple example(http://www.siegmann.nl/epublib/example-programs/epub-sample-simple1).

Could some one please help me understand what went wrong, and if i missed any additional configurations, route me toward write direction.

I have attached my java code. (used maven dependencies as indicated in http://www.siegmann.nl/epublib/download)

Here is the error I'm getting:

14:26:36,273 ERROR EpubProcessorSupport:85 - When creating XmlSerializer: java.lang.IllegalStateException: unsupported feature http://xmlpull.org/v1/doc/features.html#indent-output

14:26:36,280 ERROR EpubWriter:75 - Error writing table of contents: java.lang.NullPointerException: null

14:26:36,282 ERROR EpubProcessorSupport:85 - When creating XmlSerializer: java.lang.IllegalStateException: unsupported feature http://xmlpull.org/v1/doc/features.html#indent-output

java.lang.NullPointerException

at org.xmlpull.mxp1_serializer.MXSerializer.startDocument(MXSerializer.java:379)

at nl.siegmann.epublib.epub.PackageDocumentWriter.write(PackageDocumentWriter.java:38)

at nl.siegmann.epublib.epub.EpubWriter.writePackageDocument(EpubWriter.java:112)

at nl.siegmann.epublib.epub.EpubWriter.write(EpubWriter.java:53)

at gov.uspto.trademarks.eog.test.EbookGen.renderBook(EbookGen.java:40)

at gov.uspto.trademarks.eog.test.EbookGen.generateBook(EbookGen.java:48)

Thanks,

Roman.